case study meaning in law

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Legal Research: A Guide to Case Law

Introduction.

• Federal Court Decisions
• State Court Decisions
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Authors: Emily Carr, Senior Legal Reference Librarian, Law Library of Congress

Elizabeth Osborne, Senior Legal Reference Librarian, Law Library of Congress

Editors: Barbara Bavis, Bibliographic and Research Instruction Librarian, Law Library of Congress

Anna Price, Legal Reference Librarian, Law Library of Congress

Note: This guide is adapted from a research guide originally published on the Law Library's website .

Created: September 9, 2019

Last Updated: February 1, 2023

Each branch of government produces a different type of law. Case law is the body of law developed from judicial opinions or decisions over time (whereas statutory law comes from legislative bodies and administrative law comes from executive bodies). This guide introduces beginner legal researchers to resources for finding judicial decisions in case law resources. Coverage includes brief explanations of the court systems in the United States; federal and state case law reporters; basic Bluebook citation style for court decisions; digests; and online access to court decisions.

Court Systems and Decisions

The United States has parallel court systems, one at the federal level, and another at the state level. Both systems are divided into trial courts and appellate courts. Generally, trial courts determine the relevant facts of a dispute and apply law to these facts, while appellate courts review trial court decisions to ensure the law was applied correctly.

Stare Decisis (Precedent)

In Latin, stare decisis means "to stand by things decided." In the U.S. legal system, this Latin phrase represents the "doctrine of precedent, under which a court must follow earlier decisions when the same points arise again in litigation." ( Black's Law Dictionary , 11th ed.) Typically, a court will deviate from precedent only if there is a compelling reason. Under "vertical" stare decisis , the decisions of the highest court in a jurisdiction create mandatory precedent that must be followed by lower courts in that jurisdiction. For example, the U.S. Supreme Court creates binding precedent that all other federal courts must follow (and that all state courts must follow on questions of constitutional interpretation). Similarly, the highest court in a state creates mandatory precedent for the lower state courts below it. Intermediate appellate courts (such as the federal circuit courts of appeal) create mandatory precedent for the courts below them. A related concept is "horizontal" stare decisis , whereby a court applies its own prior decisions to similar facts before it in the future.

Case Law Reporters

Decisions are published in serial print publications called “reporters,” and are also published electronically. Reporters are discussed in greater detail under " Federal Court Decisions " and " State Court Decisions ." Information about how to cite decisions in a reporter is discussed under " Citations ."

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• Last Updated: Mar 29, 2023 2:13 PM
• URL: https://guides.loc.gov/case-law

Definition of Case Law

What is case law.

In order to preserve a uniform enforcement of the laws, the legal system adheres to the doctrine of stare decisis , which is Latin for “stand by decided matters.”  This means that a court will be bound to rule in accordance with a previously made ruling on the same type of case. Precedent, or case law, is binding on courts of the same level or lower, and applies only if there is no legislative statute created, or higher court ruling, that overrules it.

Example of Case Law Application

Case law by jurisdiction.

Case law is specific to the jurisdiction in which it was rendered. For instance, a ruling in a California appellate court would not usually be used in deciding a case in Oklahoma. While there is no prohibition against referring to case law from a state other than the state in which the case is being heard, it holds little sway. Still, if there is no precedent in the home state, relevant case law from another state may be considered by the court.

Case Law Search

In addition, the Law Library of Congress offers a great deal of information on statutes, case law, and other legal issues. This includes a Guide to Law Online .

Dissecting Case Law Citations

In the United States, people are not required to hire an attorney to represent them in either civil or criminal matters. Laypeople navigating the legal system on their own can remember one rule of thumb when it comes to referring to case law or precedent in court documents: be as specific as possible, leading the court, not only to the case, but to the section and paragraph containing the pertinent information. The Cornell Law School website offers a variety of information on legal topics, including citation of case law, and even provides a video tutorial on case citation .

Case Law Example in Civil Lawsuit Against Child Services

The Roes accompanied the boy to his therapy sessions. When they were told of the boy’s past, they asked if their children were safe with him in their home. The therapist assured them that they had nothing to worry about. Unfortunately, that was not true. Just two months after being placed with the Roe family, the Roe’s son told his parents that the boy had molested him. The boy was arrested two days later, and admitted to having sexually molested the couple’s son several times.

Related Legal Terms and Issues

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The Case Study Teaching Method

It is easy to get confused between the case study method and the case method , particularly as it applies to legal education. The case method in legal education was invented by Christopher Columbus Langdell, Dean of Harvard Law School from 1870 to 1895. Langdell conceived of a way to systematize and simplify legal education by focusing on previous case law that furthered principles or doctrines. To that end, Langdell wrote the first casebook, entitled A Selection of Cases on the Law of Contracts , a collection of settled cases that would illuminate the current state of contract law. Students read the cases and came prepared to analyze them during Socratic question-and-answer sessions in class.

The Harvard Business School case study approach grew out of the Langdellian method. But instead of using established case law, business professors chose real-life examples from the business world to highlight and analyze business principles. HBS-style case studies typically consist of a short narrative (less than 25 pages), told from the point of view of a manager or business leader embroiled in a dilemma. Case studies provide readers with an overview of the main issue; background on the institution, industry, and individuals involved; and the events that led to the problem or decision at hand. Cases are based on interviews or public sources; sometimes, case studies are disguised versions of actual events or composites based on the faculty authors’ experience and knowledge of the subject. Cases are used to illustrate a particular set of learning objectives; as in real life, rarely are there precise answers to the dilemma at hand.

Our suite of free materials offers a great introduction to the case study method. We also offer review copies of our products free of charge to educators and staff at degree-granting institutions.

For more information on the case study teaching method, see:

• Martha Minow and Todd Rakoff: A Case for Another Case Method
• HLS Case Studies Blog: Legal Education’s 9 Big Ideas
• Teaching Units: Problem Solving , Advanced Problem Solving , Skills , Decision Making and Leadership , Professional Development for Law Firms , Professional Development for In-House Counsel
• Educator Community: Tips for Teachers

Watch this informative video about the Problem-Solving Workshop:

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How to write a case brief for law school: Excerpt reproduced from Introduction to the Study of Law: Cases and Materials,

Third Edition (LexisNexis 2009) by Michael Makdisi & John Makdisi

C. HOW TO BRIEF

The previous section described the parts of a case in order to make it easier to read and identify the pertinent information that you will use to create your briefs. This section will describe the parts of a brief in order to give you an idea about what a brief is, what is helpful to include in a brief, and what purpose it serves. Case briefs are a necessary study aid in law school that helps to encapsulate and analyze the mountainous mass of material that law students must digest. The case brief represents a final product after reading a case, rereading it, taking it apart, and putting it back together again. In addition to its function as a tool for self-instruction and referencing, the case brief also provides a valuable “cheat sheet” for class participation.

Who will read your brief? Most professors will espouse the value of briefing but will never ask to see that you have, in fact, briefed. As a practicing lawyer, your client doesn’t care if you brief, so long as you win the case. The judges certainly don’t care if you brief, so long as you competently practice the law. You are the person that the brief will serve! Keep this in mind when deciding what elements to include as part of your brief and when deciding what information to include under those elements.

What are the elements of a brief? Different people will tell you to include different things in your brief. Most likely, upon entering law school, this will happen with one or more of your instructors. While opinions may vary, four elements that are essential to any useful brief are the following:

(a) Facts (name of the case and its parties, what happened factually and procedurally, and the judgment)

(b) Issues (what is in dispute)

(c) Holding (the applied rule of law)

(d) Rationale (reasons for the holding)

If you include nothing but these four elements, you should have everything you need in order to recall effectively the information from the case during class or several months later when studying for exams.

Because briefs are made for yourself, you may want to include other elements that expand the four elements listed above. Depending on the case, the inclusion of additional elements may be useful. For example, a case that has a long and important section expounding dicta might call for a separate section in your brief labeled: Dicta. Whatever elements you decide to include, however, remember that the brief is a tool intended for personal use. To the extent that more elements will help with organization and use of the brief, include them. On the other hand, if you find that having more elements makes your brief cumbersome and hard to use, cut back on the number of elements. At a minimum, however, make sure you include the four elements listed above.

Elements that you may want to consider including in addition to the four basic elements are:

(e) Dicta (commentary about the decision that was not the basis for the decision)

(f) Dissent (if a valuable dissenting opinion exits, the dissent’s opinion)

(g) Party’s Arguments (each party’s opposing argument concerning the ultimate issue)

(h) Comments (personal commentary)

Personal comments can be useful if you have a thought that does not fit elsewhere. In the personal experience of one of the authors, this element was used to label cases as specific kinds (e.g., as a case of vicarious liability) or make mental notes about what he found peculiar or puzzling about cases. This element allowed him to release his thoughts (without losing them) so that he could move on to other cases.

In addition to these elements, it may help you to organize your thoughts, as some people do, by dividing Facts into separate elements:

(1) Facts of the case (what actually happened, the controversy)

(2) Procedural History (what events within the court system led to the present case)

(3) Judgment (what the court actually decided)

Procedural History is usually minimal and most of the time irrelevant to the ultimate importance of a case; however, this is not always true. One subject in which Procedure History is virtually always relevant is Civil Procedure.

When describing the Judgment of the case, distinguish it from the Holding. The Judgment is the factual determination by the court, in favor of one party, such as “affirmed,” “reversed,” or “remanded.” In contrast, the Holding is the applied rule of law that serves as the basis for the ultimate judgment.

Remember that the purpose of a brief is to remind you of the important details that make the case significant in terms of the law. It will be a reference tool when you are drilled by a professor and will be a study aid when you prepare for exams. A brief is also like a puzzle piece.

The elements of the brief create the unique shape and colors of the piece, and, when combined with other pieces, the picture of the common law takes form. A well-constructed brief will save you lots of time by removing the need to return to the case to remember the important details and also by making it easier to put together the pieces of the common law puzzle.

D. EXTRACTING THE RELEVANT INFORMATION: ANNOTATING AND HIGHLIGHTING

So now that you know the basic elements of a brief, what information is important to include under each element? The simple answer is: whatever is relevant. But what parts of a case are relevant? When you read your first few cases, you may think that everything that the judge said was relevant to his ultimate conclusion. Even if this were true, what is relevant for the judge to make his decision is not always relevant for you to include in your brief. Remember, the reason to make a brief is not to persuade the world that the ultimate decision in the case is a sound one, but rather to aid in refreshing your memory concerning the most important parts of the case.

What facts are relevant to include in a brief? You should include the facts that are necessary to remind you of the story. If you forget the story, you will not remember how the law in the case was applied. You should also include the facts that are dispositive to the decision in the case. For instance, if the fact that a car is white is a determining factor in the case, the brief should note that the case involves a white car and not simply a car. To the extent that the procedural history either helps you to remember the case or plays an important role in the ultimate outcome, you should include these facts as well.

What issues and conclusions are relevant to include in a brief? There is usually one main issue on which the court rests its decision. This may seem simple, but the court may talk about multiple issues, and may discuss multiple arguments from both sides of the case. Be sure to distinguish the issues from the arguments made by the parties. The relevant issue or issues, and corresponding conclusions, are the ones for which the court made a final decision and which are binding. The court may discuss intermediate conclusions or issues, but stay focused on the main issue and conclusion which binds future courts.

What rationale is important to include in a brief? This is probably the most difficult aspect of the case to determine. Remember that everything that is discussed may have been relevant to the judge, but it is not necessarily relevant to the rationale of the decision. The goal is to remind yourself of the basic reasoning that the court used to come to its decision and the key factors that made the decision favor one side or the other.

A brief should be brief! Overly long or cumbersome briefs are not very helpful because you will not be able to skim them easily when you review your notes or when the professor drills you. On the other hand, a brief that is too short will be equally unhelpful because it lacks sufficient information to refresh your memory. Try to keep your briefs to one page in length. This will make it easy for you to organize and reference them.

Do not get discouraged. Learning to brief and figuring out exactly what to include will take time and practice. The more you brief, the easier it will become to extract the relevant information.

While a brief is an extremely helpful and important study aid, annotating and highlighting are other tools for breaking down the mass of material in your casebook. The remainder of this section will discuss these different techniques and show how they complement and enhance the briefing process.

Annotating Cases

Many of you probably already read with a pencil or pen, but if you do not, now is the time to get in the habit. Cases are so dense and full of information that you will find yourself spending considerable amounts of time rereading cases to find what you need. An effective way to reduce this time is to annotate the margins of the casebook. Your pencil (or pen) will be one of your best friends while reading a case. It will allow you to mark off the different sections (such as facts, procedural history, or conclusions), thus allowing you to clear your mind of thoughts and providing an invaluable resource when briefing and reviewing.

You might be wondering why annotating is important if you make an adequate, well-constructed brief. By their very nature briefs cannot cover everything in a case. Even with a thorough, well-constructed brief you may want to reference the original case in order to reread dicta that might not have seemed important at the time, to review the complete procedural history or set of facts, or to scour the rationale for a better understanding of the case; annotating makes these tasks easier. Whether you return to a case after a few hours or a few months, annotations will swiftly guide you to the pertinent parts of the case by providing a roadmap of the important sections. Your textual markings and margin notes will refresh your memory and restore specific thoughts you might have had about either the case in general or an individual passage.

Annotations will also remind you of forgotten thoughts and random ideas by providing a medium for personal comments.

In addition to making it easier to review an original case, annotating cases during the first review of a case makes the briefing process easier. With adequate annotations, the important details needed for your brief will be much easier to retrieve. Without annotations, you will likely have difficulty locating the information you seek even in the short cases. It might seem strange that it would be hard to reference a short case, but even a short case will likely take you at least fifteen to twenty-five minutes to read, while longer cases may take as much as thirty minutes to an hour to complete. No matter how long it takes, the dense material of all cases makes it difficult to remember all your thoughts, and trying to locate specific sections of the analysis may feel like you are trying to locate a needle in a haystack. An annotation in the margin, however, will not only swiftly guide you to a pertinent section, but will also refresh the thoughts that you had while reading that section.

When you read a case for the first time, read for the story and for a basic understanding of the dispute, the issues, the rationale, and the decision. As you hit these elements (or what you think are these elements) make a mark in the margins. Your markings can be as simple as “facts” (with a bracket that indicates the relevant part of the paragraph). When you spot an issue, you may simply mark “issue” or instead provide a synopsis in your own words. When a case sparks an idea — write that idea in the margin as well — you never know when a seemingly irrelevant idea might turn into something more.

Finally, when you spot a particularly important part of the text, underline it (or highlight it as described below).

With a basic understanding of the case, and with annotations in the margin, the second read-through of the case should be much easier. You can direct your reading to the most important sections and will have an easier time identifying what is and is not important. Continue rereading the case until you have identified all the relevant information that you need to make your brief, including the issue(s), the facts, the holding, and the relevant parts of the analysis.

Pencil or pen — which is better to use when annotating? Our recommendation is a mechanical pencil. Mechanical pencils make finer markings than regular pencils, and also than ballpoint pens. Although you might think a pencil might smear more than a pen, with its sharp point a mechanical pencil uses very little excess lead and will not smear as much as you might imagine. A mechanical pencil will also give you the freedom to make mistakes without consequences. When you first start annotating, you may think that some passages are more important than they really are, and therefore you may resist the urge to make a mark in order to preserve your book and prevent false guideposts. With a pencil, however, the ability to erase and rewrite removes this problem.

Highlighting

Why highlight? Like annotating, highlighting may seem unimportant if you create thorough, well-constructed briefs, but highlighting directly helps you to brief. It makes cases, especially the more complicated ones, easy to digest, review and use to extract information.

Highlighting takes advantage of colors to provide a uniquely effective method for reviewing and referencing a case. If you prefer a visual approach to learning, you may find highlighting to be a very effective tool.

If annotating and highlighting are so effective, why brief? Because the process of summarizing a case and putting it into your own words within a brief provides an understanding of the law and of the case that you cannot gain through the process of highlighting or annotating.

The process of putting the case into your own words forces you to digest the material, while annotating and highlighting can be accomplished in a much more passive manner.

What should you highlight? Similar to annotating, the best parts of the case to highlight are those that represent the needed information for your brief such as the facts, the issue, the holding and the rationale.

Unlike annotating, highlighting provides an effective way to color code, which makes referring to the case even easier. In addition, Highlighters are particularly useful in marking off entire sections by using brackets. These brackets will allow you to color-code the case without highlighting all the text, leaving the most important phrases untouched for a more detailed highlight marking or underlining.

Highlighting is a personal tool, and therefore should be used to the extent that highlighting helps, but should be modified in a way that makes it personally time efficient and beneficial. For instance, you might combine the use of annotations in the margins with the visual benefit of highlighting the relevant text. You may prefer to underline the relevant text with a pencil, but to use a highlighter to bracket off the different sections of a case. Whatever you choose to do, make sure that it works for you, regardless of what others recommend. The techniques in the remainder of this section will describe ways to make full use of your highlighters.

First, buy yourself a set of multi-colored highlighters, with at least four, or perhaps five or six different colors. Yellow, pink, and orange are usually the brightest. Depending on the brand, purple and green can be dark, but still work well. Although blue is a beautiful color, it tends to darken and hide the text.

Therefore we recommend that you save blue for the elements that you rarely highlight.

For each different section of the case, choose a color, and use that color only when highlighting the section of the case designated for that color. Consider using yellow for the text that you tend to highlight most frequently. Because yellow is the brightest, you may be inclined to use yellow for the Conclusions in order to make them stand out the most. If you do this, however, you will exhaust your other colors much faster than yellow and this will require that you purchase an entire set of new highlighters when a single color runs out because colors such as green are not sold separately. If instead you choose to use yellow on a more frequently highlighted section such as the Analysis, when it comes time to replace your yellow marker, you will need only to replace your yellow highlighter individually. In the personal experience on one of the authors, the sections of cases that seemed to demand the most highlighter attention were the

Facts and the Analysis, while the Issues and Holdings demanded the least. Other Considerations and

Procedural History required lots of highlighting in particular cases although not in every case.

Experiment if you must, but try to choose a color scheme early on in the semester and stick with it. That way, when you come back to the first cases of the semester, you will not be confused with multiple color schemes. The basic sections of a case for which you should consider giving a different color are:

(b) Procedural History

(c) Issue (and questions presented)

(d) Holding (and conclusions)

(e) Analysis (rationale)

(f) Other Considerations (such as dicta)

Not all of these sections demand a separate color. You may find that combining Facts and Procedural History or Issues and Holdings works best. Furthermore, as mentioned above, some sections may not warrant highlighting in every case (e.g., dicta probably do not need to be highlighted unless they are particularly important). If you decide that a single color is all that you need, then stick to one, but if you find yourself highlighting lots of text from many different sections, reconsider the use of at least a few different colors. Highlighters make text stand out, but only when used appropriately. The use of many colors enables you to highlight more text without reducing the highlighter’s effectiveness. Three to four colors provides decent color variation without the cumbersomeness of handling too many markers.

Once you are comfortable with your color scheme, determining exactly what to highlight still may be difficult. Similar to knowing what to annotate, experience will perfect your highlighting skills. Be careful not to highlight everything, thus ruining your highlighters’ effectiveness; at the same time, do not be afraid to make mistakes.

Now that we have covered the basics of reading, annotating, highlighting, and briefing a case, you are ready to start practicing. Keep the tips and techniques mentioned in this chapter in mind when you tackle the four topics in the remainder of this book. If you have difficultly, refer back to this chapter to help guide you as you master the case method of study and the art of using the common law.

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Case law is law that is based on judicial decisions rather than law based on constitutions , statutes , or regulations . Case law concerns unique disputes resolved by courts using the concrete facts of a case. By contrast, statutes and regulations are written abstractly.

Case law, also used interchangeably with common law , refers to the collection of precedents and authority set by previous judicial decisions on a particular issue or topic. In that sense, case law differs from one jurisdiction to another. For example, a case in New York would not be decided using case law from California. Instead, New York courts will analyze the issue relying on binding precedent .  If no previous decisions on the issue exist, New York courts might look at precedents from a different jurisdiction, that would be persuasive authority rather than binding authority. Other factors such as how old the decision is and the closeness to the facts will affect the authority of a specific case in common law.

Federalism also plays a major role in determining the authority of case law in a particular court. Indeed, each circuit has its own set of binding case law. As a result, a judgment rendered in the Ninth Circuit will not be binding in the Second Circuit but will have persuasive authority. However, decisions rendered by the Supreme Court of the United States are binding on all federal courts, and on state courts regarding issues of the Constitution and federal law.

[Last updated in May of 2020 by the Wex Definitions Team ]

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Why and How: Using the Case Study Method in the Law Classroom

Post by: Jackie Kim and Lisa Brem

Why should legal educators use case studies and other experiential teaching methods, such as role plays and simulations, in their classes?  Hasn’t the Langdell method served legal education well these last 140 years?  Certainly creating and using experiential materials requires a different set of skills from faculty, elicits a different response and level of engagement from students, and poses barriers to implementation. The ABA’s LEAPS Project [i] has a comprehensive list of objections to practical problem solving in the classroom: materials are time consuming and expensive to create and deploy; addition of a case study or simulation to a syllabus inherently displaces other material; and there are few incentives from law school leaders to introduce this type of teaching.

Yet, the argument promoting experiential materials and techniques is strong. The 2007 Carnegie Report [ii] recommended integrating lawyering skills practice into the curriculum alongside doctrinal courses, and the ABA added simulation courses to the list of practical experiences that can and should be offered by law schools in its 2015 Guidance Memo [iii] .

In a 2007 Vanderbilt Law Review article [iv] , HLS Dean Martha Minow and Professor Todd D. Rakoff argued that Langdell’s approach to teaching students using appellate cases does not do enough to prepare law students for real-world problems: “The fact is, Langdell’s case method is good for some things, but not good for others. We are not talking about fancy goals here; we are talking about teaching students ‘how to think like a lawyer.’”

But does the case study method result in a higher degree of student learning? While we have not yet seen a study on the efficacy of the case study method vs. the Langdell method in law schools, research [v] from political science professor Matthew Krain suggests that case studies and problem-based activities do enhance certain types of learning over other types of pedagogy.  In his investigation, Krain compared the results of pre-and post-course surveys of students who participated in active learning with those who received a traditional lecture course. The case studies and problems that Krain used in his non-traditional classes included: case studies in the form of popular press articles, formal case studies, films, or problem-based case exercises that required students to produce a work product.

Krain found that:

Student-centered reflection, in which students have the opportunity to discuss their understanding of the case, allows both students and instructors to connect active learning experiences back to a larger theoretical context. Case learning is particularly useful for dramatizing abstract theoretical concepts, making seemingly distant events or issues seem more “authentic” or “real,” demonstrating the connection between theory and practice, and building critical-thinking and problem-solving skills (Inoue & Krain, 2014; Krain, 2010; Kuzma & Haney, 2001; Lamy, 2007; Swimelar, 2013).

This study suggests that case-based approaches have great utility in the classroom, and they should be used more often in instances where students’ understanding of conceptual complexity or knowledge of case details is critical. Moreover, case-based exercises can be derived from a variety of different types of materials and still have great utility. If deployed selectively in the context of a more traditional classroom setting as ways to achieve particular educational objectives, case-based approaches can be useful tools in our pedagogical toolbox.

For those who might be ready to try a case study, role play, or simulation, there are resources that can help.  Harvard Law School produces case studies for use throughout the legal curriculum. The HLS Case Studies program publishes these teaching materials, and makes them available to educators, academic staff, students, and trainers. Outside of Harvard Law School, links to resources for educators implementing the case study method can be found on the Case Studies Program Resources page. Listed are case study affiliates at Harvard, legal teaching and learning tools, tips for case teaching, and free case materials. Examples include the Legal Education, ADR, and Practical Problem Solving (LEAPS) Project [vi] from the American Bar Association , which provides resources for various topics on legal education, and the Teaching Post , an educators’ forum offered by the Harvard Business School where professors can seek or provide advice on case study teaching.

“… [O]ur society is full of new problems demanding new solutions, and less so than in the past are lawyers inventing those solutions. We think we can, and ought to, do better.” – Dean Martha Minow & Professor Todd Rakoff. [vii]

[i] “Overcoming Barriers to Teaching ‘Practical Problem-Solving’.” Legal Education, ADR & Practical Problem-Solving (LEAPS) Project, American Bar Association, Section of Dispute Resolution. Accessed March 16, 2017, http://leaps.uoregon.edu/content/overcoming-barriers-teaching-%E2%80%9Cpractical-problem-solving%E2%80%9D. [ii] William M. Sullivan, Anne Colby, Judith Welch Wegner, Lloyd Bond, and Lee S. Shulman, “Educating Lawyers,”  The Carnegie Foundation for the Advancement of Teaching (2007). [iii] American Bar Association, “Managing Director’s Guidance Memo,”  Section of Legal Education and Admissions to the Bar  (2015). [iv] Martha Minow and Todd D. Rakoff, “A Case for Another Case Method,” Vanderbilt Law Review 60(2) (2007): 597-607. [v] Matthew Krain, “Putting the learning in case learning? The effects of case-based approaches on student knowledge, attitudes, and engagement,” Journal on Excellence in College Teaching 27(2) (2016): 131-153. [vi] “Overcoming Barriers to Teaching ‘Practical Problem-Solving’.” [vii] Minow and Rakoff.

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What is case law?

Case law is a key component of the legal system and if you’re considering a career in law you’ll need to familiarise yourself with it. Below we explore what case law is, how it can affect future judicial decisions and shape the law as we know it.

By Grant Longstaff . Published 3 April 2024.

Simply put, case law is a law which is established following a decision made by a judge or judges. Case law is developed by interpreting and applying existing laws to a specific situation and clarifying them when necessary. This process then sets a legal precedent which other courts are required to follow, and it will help guide future rulings and interpretations of a particular law.

Importance of case law

Case law plays a significant role in shaping the legal system and ensures it evolves when necessary. It can provide clarity and guidance to legal professionals on how laws are interpreted and applied in real life situations, and helps to ensure consistency in court rulings by drawing on the legal precedents which have informed previous cases.

How case law works

Case law develops through a process of judicial reasoning and decision making. The parties involved in a legal dispute will present their arguments and evidence in a court of law. The judge then considers all of the legal principles, statutes and precedents before reaching a decision. This decision – known as a judgement – becomes part of the body of case law.

Depending on your future practice area you may need to regularly find and interpret case law to establish if it’s still suitable. Remember, case law evolves, and so a decision which once was solid may now be lacking.

This all may feel a little daunting right now, but if you choose to study law you’ll come to understand the importance of case law, develop keen research skills, explore legal case studies and learn of the judicial decisions which have shaped today’s justice system.

Judicial decisions and precedents

Judicial decisions are key to developing case law as each decision contributes to the body of legal precedents shaping future rulings. These precedents are binding and must be followed by lower courts. You can find a detailed guide to the court structure in the UK on the Courts and Tribunals Judiciary website.

When it comes to reviewing these judicial principles and legal precedents, you’ll likely find they come as either a law report or transcript. A transcript is simply a written record of the court’s judgement. A law report on the other hand is generally only written when the case sets a precedent. The Incorporated Council of Law Reporting for England and Wales (ICLR) – the official law reporting service – describes law reports as a “highly processed account of the case” and will “contain all of the components you’ll find in a transcript, along with a number of other important and useful elements of content.” It’s also worth remembering a law report will wield more weight than a transcript when it comes to building your legal case or argument.

Common law and stare decisis

Common law refers to the wider legal system which was developed in medieval England and has evolved throughout the centuries since. It relies deeply on case law, using the judicial decisions and precedents, to change over time. Case law helps establish new principles and redefine existing ones. It also helps resolve any ambiguity and allows for nuance to be incorporated into common law.

When it comes to case law you’ll likely come across the term “stare decisis”, a Latin phrase, meaning “to stand by decisions”. In a legal setting, stare decisis refers to the principle that decisions made by higher courts are binding on lower courts, promoting fairness and stability throughout common law and the legal system.

Ultimately, case law is a crucial element of the legal system, providing guidance, consistency, and precedent for legal interpretations and rulings.

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Home » Case Study – Methods, Examples and Guide

Case Study – Methods, Examples and Guide

Table of Contents

A case study is a research method that involves an in-depth examination and analysis of a particular phenomenon or case, such as an individual, organization, community, event, or situation.

It is a qualitative research approach that aims to provide a detailed and comprehensive understanding of the case being studied. Case studies typically involve multiple sources of data, including interviews, observations, documents, and artifacts, which are analyzed using various techniques, such as content analysis, thematic analysis, and grounded theory. The findings of a case study are often used to develop theories, inform policy or practice, or generate new research questions.

Types of Case Study

Types and Methods of Case Study are as follows:

Single-Case Study

A single-case study is an in-depth analysis of a single case. This type of case study is useful when the researcher wants to understand a specific phenomenon in detail.

For Example , A researcher might conduct a single-case study on a particular individual to understand their experiences with a particular health condition or a specific organization to explore their management practices. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a single-case study are often used to generate new research questions, develop theories, or inform policy or practice.

Multiple-Case Study

A multiple-case study involves the analysis of several cases that are similar in nature. This type of case study is useful when the researcher wants to identify similarities and differences between the cases.

For Example, a researcher might conduct a multiple-case study on several companies to explore the factors that contribute to their success or failure. The researcher collects data from each case, compares and contrasts the findings, and uses various techniques to analyze the data, such as comparative analysis or pattern-matching. The findings of a multiple-case study can be used to develop theories, inform policy or practice, or generate new research questions.

Exploratory Case Study

An exploratory case study is used to explore a new or understudied phenomenon. This type of case study is useful when the researcher wants to generate hypotheses or theories about the phenomenon.

For Example, a researcher might conduct an exploratory case study on a new technology to understand its potential impact on society. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as grounded theory or content analysis. The findings of an exploratory case study can be used to generate new research questions, develop theories, or inform policy or practice.

Descriptive Case Study

A descriptive case study is used to describe a particular phenomenon in detail. This type of case study is useful when the researcher wants to provide a comprehensive account of the phenomenon.

For Example, a researcher might conduct a descriptive case study on a particular community to understand its social and economic characteristics. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of a descriptive case study can be used to inform policy or practice or generate new research questions.

Instrumental Case Study

An instrumental case study is used to understand a particular phenomenon that is instrumental in achieving a particular goal. This type of case study is useful when the researcher wants to understand the role of the phenomenon in achieving the goal.

For Example, a researcher might conduct an instrumental case study on a particular policy to understand its impact on achieving a particular goal, such as reducing poverty. The researcher collects data from multiple sources, such as interviews, observations, and documents, and uses various techniques to analyze the data, such as content analysis or thematic analysis. The findings of an instrumental case study can be used to inform policy or practice or generate new research questions.

Case Study Data Collection Methods

Here are some common data collection methods for case studies:

Interviews involve asking questions to individuals who have knowledge or experience relevant to the case study. Interviews can be structured (where the same questions are asked to all participants) or unstructured (where the interviewer follows up on the responses with further questions). Interviews can be conducted in person, over the phone, or through video conferencing.

Observations

Observations involve watching and recording the behavior and activities of individuals or groups relevant to the case study. Observations can be participant (where the researcher actively participates in the activities) or non-participant (where the researcher observes from a distance). Observations can be recorded using notes, audio or video recordings, or photographs.

Documents can be used as a source of information for case studies. Documents can include reports, memos, emails, letters, and other written materials related to the case study. Documents can be collected from the case study participants or from public sources.

Surveys involve asking a set of questions to a sample of individuals relevant to the case study. Surveys can be administered in person, over the phone, through mail or email, or online. Surveys can be used to gather information on attitudes, opinions, or behaviors related to the case study.

Artifacts are physical objects relevant to the case study. Artifacts can include tools, equipment, products, or other objects that provide insights into the case study phenomenon.

How to conduct Case Study Research

Conducting a case study research involves several steps that need to be followed to ensure the quality and rigor of the study. Here are the steps to conduct case study research:

• Define the research questions: The first step in conducting a case study research is to define the research questions. The research questions should be specific, measurable, and relevant to the case study phenomenon under investigation.
• Select the case: The next step is to select the case or cases to be studied. The case should be relevant to the research questions and should provide rich and diverse data that can be used to answer the research questions.
• Collect data: Data can be collected using various methods, such as interviews, observations, documents, surveys, and artifacts. The data collection method should be selected based on the research questions and the nature of the case study phenomenon.
• Analyze the data: The data collected from the case study should be analyzed using various techniques, such as content analysis, thematic analysis, or grounded theory. The analysis should be guided by the research questions and should aim to provide insights and conclusions relevant to the research questions.
• Draw conclusions: The conclusions drawn from the case study should be based on the data analysis and should be relevant to the research questions. The conclusions should be supported by evidence and should be clearly stated.
• Validate the findings: The findings of the case study should be validated by reviewing the data and the analysis with participants or other experts in the field. This helps to ensure the validity and reliability of the findings.
• Write the report: The final step is to write the report of the case study research. The report should provide a clear description of the case study phenomenon, the research questions, the data collection methods, the data analysis, the findings, and the conclusions. The report should be written in a clear and concise manner and should follow the guidelines for academic writing.

Examples of Case Study

Here are some examples of case study research:

• The Hawthorne Studies : Conducted between 1924 and 1932, the Hawthorne Studies were a series of case studies conducted by Elton Mayo and his colleagues to examine the impact of work environment on employee productivity. The studies were conducted at the Hawthorne Works plant of the Western Electric Company in Chicago and included interviews, observations, and experiments.
• The Stanford Prison Experiment: Conducted in 1971, the Stanford Prison Experiment was a case study conducted by Philip Zimbardo to examine the psychological effects of power and authority. The study involved simulating a prison environment and assigning participants to the role of guards or prisoners. The study was controversial due to the ethical issues it raised.
• The Challenger Disaster: The Challenger Disaster was a case study conducted to examine the causes of the Space Shuttle Challenger explosion in 1986. The study included interviews, observations, and analysis of data to identify the technical, organizational, and cultural factors that contributed to the disaster.
• The Enron Scandal: The Enron Scandal was a case study conducted to examine the causes of the Enron Corporation’s bankruptcy in 2001. The study included interviews, analysis of financial data, and review of documents to identify the accounting practices, corporate culture, and ethical issues that led to the company’s downfall.
• The Fukushima Nuclear Disaster : The Fukushima Nuclear Disaster was a case study conducted to examine the causes of the nuclear accident that occurred at the Fukushima Daiichi Nuclear Power Plant in Japan in 2011. The study included interviews, analysis of data, and review of documents to identify the technical, organizational, and cultural factors that contributed to the disaster.

Application of Case Study

Case studies have a wide range of applications across various fields and industries. Here are some examples:

Business and Management

Case studies are widely used in business and management to examine real-life situations and develop problem-solving skills. Case studies can help students and professionals to develop a deep understanding of business concepts, theories, and best practices.

Case studies are used in healthcare to examine patient care, treatment options, and outcomes. Case studies can help healthcare professionals to develop critical thinking skills, diagnose complex medical conditions, and develop effective treatment plans.

Case studies are used in education to examine teaching and learning practices. Case studies can help educators to develop effective teaching strategies, evaluate student progress, and identify areas for improvement.

Social Sciences

Case studies are widely used in social sciences to examine human behavior, social phenomena, and cultural practices. Case studies can help researchers to develop theories, test hypotheses, and gain insights into complex social issues.

Law and Ethics

Case studies are used in law and ethics to examine legal and ethical dilemmas. Case studies can help lawyers, policymakers, and ethical professionals to develop critical thinking skills, analyze complex cases, and make informed decisions.

Purpose of Case Study

The purpose of a case study is to provide a detailed analysis of a specific phenomenon, issue, or problem in its real-life context. A case study is a qualitative research method that involves the in-depth exploration and analysis of a particular case, which can be an individual, group, organization, event, or community.

The primary purpose of a case study is to generate a comprehensive and nuanced understanding of the case, including its history, context, and dynamics. Case studies can help researchers to identify and examine the underlying factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and detailed understanding of the case, which can inform future research, practice, or policy.

Case studies can also serve other purposes, including:

• Illustrating a theory or concept: Case studies can be used to illustrate and explain theoretical concepts and frameworks, providing concrete examples of how they can be applied in real-life situations.
• Developing hypotheses: Case studies can help to generate hypotheses about the causal relationships between different factors and outcomes, which can be tested through further research.
• Providing insight into complex issues: Case studies can provide insights into complex and multifaceted issues, which may be difficult to understand through other research methods.
• Informing practice or policy: Case studies can be used to inform practice or policy by identifying best practices, lessons learned, or areas for improvement.

Advantages of Case Study Research

There are several advantages of case study research, including:

• In-depth exploration: Case study research allows for a detailed exploration and analysis of a specific phenomenon, issue, or problem in its real-life context. This can provide a comprehensive understanding of the case and its dynamics, which may not be possible through other research methods.
• Rich data: Case study research can generate rich and detailed data, including qualitative data such as interviews, observations, and documents. This can provide a nuanced understanding of the case and its complexity.
• Holistic perspective: Case study research allows for a holistic perspective of the case, taking into account the various factors, processes, and mechanisms that contribute to the case and its outcomes. This can help to develop a more accurate and comprehensive understanding of the case.
• Theory development: Case study research can help to develop and refine theories and concepts by providing empirical evidence and concrete examples of how they can be applied in real-life situations.
• Practical application: Case study research can inform practice or policy by identifying best practices, lessons learned, or areas for improvement.
• Contextualization: Case study research takes into account the specific context in which the case is situated, which can help to understand how the case is influenced by the social, cultural, and historical factors of its environment.

Limitations of Case Study Research

There are several limitations of case study research, including:

• Limited generalizability : Case studies are typically focused on a single case or a small number of cases, which limits the generalizability of the findings. The unique characteristics of the case may not be applicable to other contexts or populations, which may limit the external validity of the research.
• Biased sampling: Case studies may rely on purposive or convenience sampling, which can introduce bias into the sample selection process. This may limit the representativeness of the sample and the generalizability of the findings.
• Subjectivity: Case studies rely on the interpretation of the researcher, which can introduce subjectivity into the analysis. The researcher’s own biases, assumptions, and perspectives may influence the findings, which may limit the objectivity of the research.
• Limited control: Case studies are typically conducted in naturalistic settings, which limits the control that the researcher has over the environment and the variables being studied. This may limit the ability to establish causal relationships between variables.
• Time-consuming: Case studies can be time-consuming to conduct, as they typically involve a detailed exploration and analysis of a specific case. This may limit the feasibility of conducting multiple case studies or conducting case studies in a timely manner.
• Resource-intensive: Case studies may require significant resources, including time, funding, and expertise. This may limit the ability of researchers to conduct case studies in resource-constrained settings.

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Case Law Research Guide

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Every law student and practicing attorney must be able to find, read, analyze, and interpret case law. Under the common law principles of stare decisis, a court must follow the decisions in previous cases on the same legal topic. Therefore, finding cases is essential to finding out what the law is on a particular issue.

This guide will show you how to read a case citation and will set out the sources, both print and online, for finding cases. This guide also covers how to use digests, headnotes, and key numbers to find case law, as well as how to find cases through terms and connectors searching.

To find cases using secondary sources, such as legal encyclopedias or legal treatises, see our Secondary Sources Research Guide . For additional strategies to find cases, like using statutory annotations or citators, see our  Case Law Research Tutorial . Our tutorial also covers how to update cases using citators (Lexis’ Shepard’s tool and Westlaw’s KeyCite).

Basic Case Citation

A case citation is a reference to where a case (also called a  decision  or an  opinion  ) is printed in a book. The citation can also be used to retrieve cases from  Westlaw  and  Lexis . A case citation consists of a volume number, an abbreviation of the title of the book or other item, and a page number.  

The precise format of a case citation depends on a number of factors, including the jurisdiction, court, and type of case. You should review the rest of this section on citing cases (and the relevant rules in  The Bluebook ) before trying to format a case citation for the first time. See our Bluebook Guide for more information.

The basic format of a case citation is as follows:

Parallel Citations

When the same case is printed in different books, citations to more than one book may be given. These additional citations are known as  parallel citations .

Example: 265 U.S. 274, 68 L. Ed. 1016, 44 S. Ct. 565.

This means that the case you would find at page 565 of volume 44 of the  Supreme Court Reporter  (published by West) will be the same case you find on page 1016 of volume 68 of  Lawyers' Edition  (published by Lexis), and both will be the same as the opinion you find in the official government version,  United States Reports . Although the text of the opinion will be identical, the added editorial material will differ with each publisher.

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Case study research.

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A legal scholar who uses the term ‘case’ will probably first think of a legal case. From a socio-legal perspective, the understanding of this concept is, however, slightly different. Case study research is a methodology that is useful to study ‘how’ or ‘why’ questions in real-life.

Over the last forty years, researchers from sociology, anthropology and various other disciplines have developed the case study research methodology dramatically. This can be confusing for legal researchers. Luckily, both Webley and Argyrou have written an article on case study research specifically for legal researchers. Webley writes, for example, that this methodology allows us to know ‘how laws are understood, and how and why they are applied and misapplied, subverted, complied with or rejected’. Both authors rely upon the realist tradition of case study research as theorised by Yin. Yin defines the scope of a case study as: “An empirical inquiry that investigates a contemporary phenomenon in depth and within its real-life context, when the boundaries between phenomenon and context are not clearly evident”.

Before you start collecting data for your case study, it is important to think about the theory and the concepts that you will want to use, as this will very much determine what your case will be about and will help you in the analysis of your data. You should then decide which methods of data collection and sources you will consult to generate a rich spectrum of data. Observations, legal guidelines, press articles… can be useful. Legal case study researchers usually also rely extensively on interviews. The meaning that interview participants give to their experiences with legal systems can uncover the influence of socio-economic factors on the law, legal processes and legal institutions.

Case studies strive for generalisable theories that go beyond the setting for the specific case that has been studied. The in-depth understanding that we gain from one case, might help to also say something about other cases in other contexts but with similar dynamics at stake. However, you need to be careful to not generalize your findings across populations or universes.

Argyrou, A. (2017) Making the Case for Case Studies in Empirical Legal Research. Utrecht Law Review, Vol.13 (3), pp.95-113

Flyvbjerg, B. (2006.) Five Misunderstandings about Case-Study Research, Qualitative Inquiry 12( 2), 219-245.

Gerring, J. (2004) What Is a Case Study and What Is It Good for? American Political Science Review 98( 2), 341-354.

Simons, H. (2014) Case Study Research: In-Depth Understanding in Context. In P. Leavy (Ed.), The Oxford Handbook of Qualitative Research, Oxford University Press.

Webley, L. (2016) Stumbling Blocks in Empirical Legal Research: Case Study Research. Law and Method, 10.

Yin, R. K. (2009). Case study research: Design and methods (4th Ed.). Thousand Oaks, CA: Sage.

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• What Is a Case Study? | Definition, Examples & Methods

What Is a Case Study? | Definition, Examples & Methods

Published on May 8, 2019 by Shona McCombes . Revised on November 20, 2023.

A case study is a detailed study of a specific subject, such as a person, group, place, event, organization, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research.

A case study research design usually involves qualitative methods , but quantitative methods are sometimes also used. Case studies are good for describing , comparing, evaluating and understanding different aspects of a research problem .

Table of contents

When to do a case study, step 1: select a case, step 2: build a theoretical framework, step 3: collect your data, step 4: describe and analyze the case, other interesting articles.

A case study is an appropriate research design when you want to gain concrete, contextual, in-depth knowledge about a specific real-world subject. It allows you to explore the key characteristics, meanings, and implications of the case.

Case studies are often a good choice in a thesis or dissertation . They keep your project focused and manageable when you don’t have the time or resources to do large-scale research.

You might use just one complex case study where you explore a single subject in depth, or conduct multiple case studies to compare and illuminate different aspects of your research problem.

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Once you have developed your problem statement and research questions , you should be ready to choose the specific case that you want to focus on. A good case study should have the potential to:

• Provide new or unexpected insights into the subject
• Challenge or complicate existing assumptions and theories
• Propose practical courses of action to resolve a problem
• Open up new directions for future research

TipIf your research is more practical in nature and aims to simultaneously investigate an issue as you solve it, consider conducting action research instead.

Unlike quantitative or experimental research , a strong case study does not require a random or representative sample. In fact, case studies often deliberately focus on unusual, neglected, or outlying cases which may shed new light on the research problem.

Example of an outlying case studyIn the 1960s the town of Roseto, Pennsylvania was discovered to have extremely low rates of heart disease compared to the US average. It became an important case study for understanding previously neglected causes of heart disease.

However, you can also choose a more common or representative case to exemplify a particular category, experience or phenomenon.

Example of a representative case studyIn the 1920s, two sociologists used Muncie, Indiana as a case study of a typical American city that supposedly exemplified the changing culture of the US at the time.

While case studies focus more on concrete details than general theories, they should usually have some connection with theory in the field. This way the case study is not just an isolated description, but is integrated into existing knowledge about the topic. It might aim to:

• Exemplify a theory by showing how it explains the case under investigation
• Expand on a theory by uncovering new concepts and ideas that need to be incorporated
• Challenge a theory by exploring an outlier case that doesn’t fit with established assumptions

To ensure that your analysis of the case has a solid academic grounding, you should conduct a literature review of sources related to the topic and develop a theoretical framework . This means identifying key concepts and theories to guide your analysis and interpretation.

There are many different research methods you can use to collect data on your subject. Case studies tend to focus on qualitative data using methods such as interviews , observations , and analysis of primary and secondary sources (e.g., newspaper articles, photographs, official records). Sometimes a case study will also collect quantitative data.

Example of a mixed methods case studyFor a case study of a wind farm development in a rural area, you could collect quantitative data on employment rates and business revenue, collect qualitative data on local people’s perceptions and experiences, and analyze local and national media coverage of the development.

The aim is to gain as thorough an understanding as possible of the case and its context.

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In writing up the case study, you need to bring together all the relevant aspects to give as complete a picture as possible of the subject.

How you report your findings depends on the type of research you are doing. Some case studies are structured like a standard scientific paper or thesis , with separate sections or chapters for the methods , results and discussion .

Others are written in a more narrative style, aiming to explore the case from various angles and analyze its meanings and implications (for example, by using textual analysis or discourse analysis ).

In all cases, though, make sure to give contextual details about the case, connect it back to the literature and theory, and discuss how it fits into wider patterns or debates.

If you want to know more about statistics , methodology , or research bias , make sure to check out some of our other articles with explanations and examples.

• Normal distribution
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• Null hypothesis
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McCombes, S. (2023, November 20). What Is a Case Study? | Definition, Examples & Methods. Scribbr. Retrieved September 3, 2024, from https://www.scribbr.com/methodology/case-study/

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How to Analyze Case Law

Last Updated: January 21, 2023 Fact Checked

This article was written by Jennifer Mueller, JD . Jennifer Mueller is an in-house legal expert at wikiHow. Jennifer reviews, fact-checks, and evaluates wikiHow's legal content to ensure thoroughness and accuracy. She received her JD from Indiana University Maurer School of Law in 2006. There are 7 references cited in this article, which can be found at the bottom of the page. This article has been fact-checked, ensuring the accuracy of any cited facts and confirming the authority of its sources. This article has been viewed 130,201 times.

When you hear the word "law," you may assume the word refers to statutes passed by Congress and state legislatures. But a major portion of American law actually is case law – the rules appellate judges distill from their interpretation of statutes and other sources. Accordingly, much of law school is spent learning how to analyze case law. However, attending law school isn't strictly necessary to acquire this valuable skill. You can teach yourself how to analyze case law, which begins – but doesn't end – with a thorough reading of the court's written opinion.

Summarizing the Facts

• The first time you read through a case, don't worry about trying to understand it. Just read for a sense of what's happening, who the major parties are, and what they want the court to do.
• Keep in mind that legal opinions aren't written for laypeople, or even for law students or attorneys – they are written for other judges. If you don't understand something (assuming you're not an appellate court judge), there's nothing wrong with that.
• You may have to go outside the opinion itself and look at other articles about the case, and then come back to it. For example, if you're reading a case that caused quite a stir in the media when it was decided, there will no doubt be newspaper and magazine articles about it. Reading those can help you better understand the court opinion.
• Many cases have summaries that appear before the case and let you know the basics of what happened, the issue before the court, and how the court resolved that issue. The summary can be helpful, but don't use it as a substitute for an initial read-through of the case.

• To make party identification even more confusing, party names may switch sides of the "v." in the case caption depending on who appealed. For example, suppose when a case began, Sally Sunshine sued Marvin Moon. The case's caption would be "Sunshine v. Moon." The trial court found in favor of Ms. Sunshine – but Mr. Moon appealed. The caption then became "Moon v. Sunshine."
• To continue the example, suppose the appellate court found in favor of Mr. Moon, but Ms. Sunshine appealed that ruling to a higher court. Now the case's caption is "Sunshine v. Moon" again.
• Since litigants in written opinions typically are only identified by their roles – appellant and appellee, for example – their names may only be mentioned once.

• Since the procedural history determines the role of the litigants, and thus what each of them is called throughout the written opinion, understanding how the case moved through the court system – who sued whom, and who appealed – is paramount to understanding the case.
• At the same time, you don't need to go into too much detail here. You just need to understand who filed the original lawsuit (which will help you understand the facts of the case), the decision at trial, and who appealed and why.

• At the appellate level, the courts are concerned with legal issues, not questions of fact. So, for example, if you are reading a case that came about as a result of a bar fight, the factual question of whether one party assaulted the other has already been resolved.
• In many cases, the initial facts that prompted the dispute may be summarized in a sentence or two. Often, what's really important is what happened afterward.
• Keep in mind that not all judges are the best writers. While you may be tempted to believe a particular fact is important because the judge who wrote the opinion spent several paragraphs discussing it, this is not necessarily the case.
• As you read more and more cases, particularly if the cases you read are focused on a particular court, you will become familiar with the styles of individual judges. This can make it easier for you to immediately notice when the judge is focusing on facts he or she believes are central to the case's holding.

Identifying the Issue and Decision

• Essentially, you're looking for what the person who appealed the lower court's ruling wanted to happen, that didn't. To find the issue, you must figure out what that person thought the lower court did wrong, and why.
• This usually isn't about something as simple as one person believing he should have been awarded more money, or a criminal defendant not wanting to go to jail. That might be part of an appellant's personal motivation, but to have a legitimate appeal you must be able to point to some way that the lower court made a legal error.
• In many cases, the legal error isn't an obvious error. The lower court may have applied the law correctly – but the appellant is arguing that her case is different from the cases that developed the rule the lower court used, or that the lower court should have used a different rule.
• Often in Supreme Court cases, there isn't a rule that can be handed down from previous cases and applied in this case, because no court has ever decided a case like this one. In these situations, it's up to the court to figure out how to tackle this new issue, and where it fits in to the long line of American jurisprudence.

• In some cases, the issue before the court involves multiple yes/no questions, or a follow-up question that is conditional on the answer to the first.
• This usually happens when a particular factual situation present in the case has never been explored by any other court. The court must first determine whether a particular law applies to that factual situation at all before it can decide how the law applies.
• For example, suppose a baker has been fined by the local government for creating cupcakes with expletives written in icing. The court may first have to determine whether icing on cupcakes is the sort of speech or expression protected by the First Amendment, before it can reach the real issue of whether the baker's First Amendment rights have been violated.

• Some judges have a very clear, straightforward writing style, and they'll phrase the issue as a question and answer it directly. However, this isn't usually the case. In most written opinions, you should expect to dig for the question and answer, which you'll have to craft yourself.
• When more than one question is asked, sometimes the answer to the first takes care of all the others. To look at the earlier cupcake-icing example, if the court had determined that no, icing on cupcakes is not protected by the First Amendment, the second question disappears. You don't have to consider whether the baker's First Amendment rights were violated by the fine, because she didn't have any First Amendment rights in the first place.
• When the answer is qualified with a "sometimes," any conditional questions that follow likewise will have qualifications. #Note any significant dissents. In many cases, particularly at the Supreme Court level, a justice who disagrees with the majority will issue a dissent. As time passes and court interpretation evolves, a significant dissent may end up being a majority opinion later on when the court reverses or overturns an earlier decision. [12] X Research source
• There also may be concurrences, which are separate opinions written by justices who agree with the ultimate outcome of the case, but not with the reasoning the majority applied to get there. Often a concurrence can help you understand the majority's reasoning, particularly if it seemed convoluted on first read.
• Unless you understand where the case you're reading falls in the history and development of that particular area of law, you may not be able to recognize which other opinions are important until you do further research.
• If you're unsure, it's best to simply note other opinions – be they dissents or concurrences – and the key difference between them and the majority's opinion.
• Especially if you're reading a Supreme Court case, you also should note which justice authored the dissent or concurrence. As justices leave the court and are replaced, the values and judicial temperament of the majority also can change.
• A dissent from a decade ago may become a majority opinion tomorrow – often written by the same justice, now carrying the majority where he or she once held a minority view.

Understanding the Reasoning

• Make note of the case from which the rule came, although typically it's not necessary for you to go back and read the case itself to understand the rule.
• However, if a significant portion of the opinion discusses the previous case, you may want to go back and read it as well so you have a better understanding of what the court is talking about.
• In some opinions (especially those penned by judges with straightforward writing styles), the rule used by the court will follow trigger phrases such as "the rule we apply is" or "we decide this case by applying the rule from" – phrases that alert you the court is about to tell you exactly what rule they used.
• Most opinions won't be this direct, and require a closer analysis of the language to ascertain the rule the court used. Sometimes you can figure this out by working backwards. Read the court's decision, and then follow the court's train of logic in reverse until you reach the rule.

• The application of a legal precedent to the facts of a case is the heart of legal analysis. This typically is done using similes. Seldom has the exact issue been presented before – to make a decision, the court must determine that this case is like a different case, and therefore the same rule should apply.
• Keep in mind that, especially if you're analyzing a Supreme Court case, the court wouldn't have accepted that case on appeal if it didn't present a new issue that had not already been decided in an earlier case.
• For this reason, there likely won't be a precedent that is entirely on point, or a previous case with the same fact pattern in which the same issue was raised and decided.
• Rather, the court must compare cases to find a rule that applies closely and is based on a similar situation that is analogous to the dispute presented.

• Sometimes the easiest way to locate the court's pivotal fact or facts is to consider what would have happened if they'd chosen to focus on a different fact.
• For example, if the court in the case of the beleaguered baker had decided to focus on the fact that cupcakes are food, and food has never been protected under the First Amendment, it might have arrived at a different decision than it did. Because the court focused instead on the fact that the baker wrote words with icing, just as writers write words in ink, and concluded that written words inarguably enjoy First Amendment protection.
• Although many other facts may be relevant, or important to some other aspect of the case, those aren't the facts that made the court rule the way it did.

• No court case exists in isolation. Once a court issues a decision, the legal interpretation and rules it establishes become part of the larger body of law devoted to that particular issue. Each opinion helps future courts understand more about the statute or constitutional provision at the heart of the case.
• You don't have to wait for future courts to apply the rule you've just learned to other cases, however. Take the facts in the original case and twist them slightly, then apply the rule yourself.
• Law professors call these imaginary cases "hypotheticals," and spend a good portion of class churning them out and asking their students to apply the rule they've learned to sometimes bizarre and convoluted stories.

Expert Q&A

You might also like.

• ↑ https://www.gareth-evans.com/how-to-read-understand-and-summarise-legal-cases/
• ↑ http://www.lexisnexis.com/en-us/lawschool/pre-law/reading-a-casebook.page
• ↑ https://www.monash.edu/learnhq/write-like-a-pro/annotated-assessment-samples/law/law-case-note
• ↑ https://utas.libguides.com/legal_research/caselaw
• ↑ http://www.cengage.com/resource_uploads/downloads/0324654553_91282.pdf
• ↑ https://lawschool.westlaw.com/marketing/display/SG/3
• ↑ http://www.csun.edu/~kkd61657/brief.pdf

About This Article

Case law refers to the decisions appellate judges make from their interpretations of former cases. To analyze specific case law, you’ll need to read the case through and try to get a feel for how the court made their decision. It can be pretty complex when you’re first reading a case, so jot down the main parties, the main dispute, and a brief history of the case to help yourself keep track. Once you understand the case, try to identify the legal rules the court used to make their decision. It’s also helpful to imagine different scenarios where the rule the case established could be applied, and whether or not the outcome would be the same. To learn how to focus on the most important facts of a case, read more from our Legal co-author! Did this summary help you? Yes No

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• Case Study | Definition, Examples & Methods

Case Study | Definition, Examples & Methods

Published on 5 May 2022 by Shona McCombes . Revised on 30 January 2023.

A case study is a detailed study of a specific subject, such as a person, group, place, event, organisation, or phenomenon. Case studies are commonly used in social, educational, clinical, and business research.

A case study research design usually involves qualitative methods , but quantitative methods are sometimes also used. Case studies are good for describing , comparing, evaluating, and understanding different aspects of a research problem .

Table of contents

When to do a case study, step 1: select a case, step 2: build a theoretical framework, step 3: collect your data, step 4: describe and analyse the case.

A case study is an appropriate research design when you want to gain concrete, contextual, in-depth knowledge about a specific real-world subject. It allows you to explore the key characteristics, meanings, and implications of the case.

Case studies are often a good choice in a thesis or dissertation . They keep your project focused and manageable when you don’t have the time or resources to do large-scale research.

You might use just one complex case study where you explore a single subject in depth, or conduct multiple case studies to compare and illuminate different aspects of your research problem.

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Once you have developed your problem statement and research questions , you should be ready to choose the specific case that you want to focus on. A good case study should have the potential to:

• Provide new or unexpected insights into the subject
• Challenge or complicate existing assumptions and theories
• Propose practical courses of action to resolve a problem
• Open up new directions for future research

Unlike quantitative or experimental research, a strong case study does not require a random or representative sample. In fact, case studies often deliberately focus on unusual, neglected, or outlying cases which may shed new light on the research problem.

If you find yourself aiming to simultaneously investigate and solve an issue, consider conducting action research . As its name suggests, action research conducts research and takes action at the same time, and is highly iterative and flexible. 

However, you can also choose a more common or representative case to exemplify a particular category, experience, or phenomenon.

While case studies focus more on concrete details than general theories, they should usually have some connection with theory in the field. This way the case study is not just an isolated description, but is integrated into existing knowledge about the topic. It might aim to:

• Exemplify a theory by showing how it explains the case under investigation
• Expand on a theory by uncovering new concepts and ideas that need to be incorporated
• Challenge a theory by exploring an outlier case that doesn’t fit with established assumptions

To ensure that your analysis of the case has a solid academic grounding, you should conduct a literature review of sources related to the topic and develop a theoretical framework . This means identifying key concepts and theories to guide your analysis and interpretation.

There are many different research methods you can use to collect data on your subject. Case studies tend to focus on qualitative data using methods such as interviews, observations, and analysis of primary and secondary sources (e.g., newspaper articles, photographs, official records). Sometimes a case study will also collect quantitative data .

The aim is to gain as thorough an understanding as possible of the case and its context.

In writing up the case study, you need to bring together all the relevant aspects to give as complete a picture as possible of the subject.

How you report your findings depends on the type of research you are doing. Some case studies are structured like a standard scientific paper or thesis, with separate sections or chapters for the methods , results , and discussion .

Others are written in a more narrative style, aiming to explore the case from various angles and analyse its meanings and implications (for example, by using textual analysis or discourse analysis ).

In all cases, though, make sure to give contextual details about the case, connect it back to the literature and theory, and discuss how it fits into wider patterns or debates.

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Importance of Case Analysis and Understanding of Cases in Legal Studies

This article explains the importance of analyzing cases in the legal field and the purpose of case analysis. It also provides a guide on how to read and understand cases, including the significance of headnotes, facts, and issues in case analysis. Further, it emphasizes the need for a slower, more careful approach to reading cases, comparing different case reports, and understanding cases in their historical context.

Meaning of Analysis

Purpose of analysis, reading a case, understanding cases.

Although in most legal systems, statutory law plays a far more critical role in the day-to-day life of individuals than cases decided by courts, many legal studies focus, wholly or in part, on the understanding and analysis of cases.

The fundamental reason for giving attention to cases is that courts interpret statutes, constitutional provisions and administrative regulations, explain earlier court opinions on points of legal significance, and declare the meaning and scope of the application of legal rules. In addition, they often develop and express new legal regulations and principles.

Analysis of cases is the process of identifying and understanding legal principles. Cases may be analyzed for a variety of purposes, which may include the following:

1.  To see whether a court opinion based on a case applies to a given fact situation. Lawyers routinely do this as part of their professional work. This may also be done by students required to write a problem-based assignment (essay, term paper, project, etc.) , often done by researchers working on a dissertation and thesis.

2. To compare two or more or a series of cases to examine how the courts have decided cases on specific legal issues, such as the parameters used by courts in awarding damages for unfair dismissal or professional negligence.

3. To examine the ‘approach’ adopted by courts for critical analysis and evaluation of the appropriateness or otherwise of the judicial attitude on a specific matter, such as the court approach on certain provisions of the constitution or in issues of employer-employee disputes.

In this regard, the following steps are to be followed carefully:

1. Slower Reading

Fast or quick movement is the rule of the day. But in case law analysis, this is not a good principle. “Fast reading’ of case law does not produce the best result in studying or assimilating case law.

For example , a speedy reading may lead to an inaccurate comprehension of ratio decidendi or preclude the reader from appreciating the delicate nuances of a case or a point emerging from between the lines.

On the other hand, a slower reader with watchful eyes may get enough time to grasp the facts and statements to assess the attitude of the court and its feelings to ascertain the law.

2. Comparing Different Case Reports

Usually, the judgments pronounced by a Superior Court are reported in many journals and reports. When more than one report is available to the researcher, he must look at them because new ideas often strike the reader when he compares different case reports. Moreover, with time, reporting processes acquire more straightforward and subtle forms. Therefore, their reading may help in the emergence of new ideas; as far as possible unabridged reports should be compared to determine if there is a difference between them.

3. Reading Case Law in its Historical Context

The historical background of a case is of considerable importance as it sheds light on the proper grounds of and on the policy related to the decision. It also helps in distinguishing the case from other similar cases or treating it as absolute or as obscure. Similarly, the reading of cases in their political, social, and economic context is equally essential from the point of view of the problem at hand, especially in the area of property rights, right to liberty, freedom of trade and commerce, use changes in these areas are very frequent.

In any legal research involving case law analysis, a good understanding of the various parts of a case is the first step.

1. Headnotes

Headnotes, which are found at the beginning of a case, generally provide a piece of brief information as to the facts of the case, the main issues involved, the holding of the court, and often give a summary of the main points in the court’s ruling.

The paragraphs in the headnotes are usually arranged in the same sequence in which the issues are to be taken up by judges. In some law reports, the headnotes also mention the cases followed, overturned, or distinguished.

However, the cases merely considered are generally not mentioned in the headnotes. Instead, before the beginning of the judgment, a list of all the cases used in the parties’ arguments or used in the judgment is provided, indicating which cases were merely considered, followed, not followed, distinguished, and so on.

Editors of the concerned law report prepare headnotes. These are copyrighted material, whereas the reported case is not.

In a case analysis, the researcher should not rely only on headnotes. It is necessary that the case in full, or those parts that are relevant to the research, should be examined. Headnotes may sometimes be misleading.

Facts are statements of what happened that gave rise to legal issues (both in civil and criminal proceedings) presented before the court for its judgment.

A court, before discussing the legal issues, expressing its opinion on the issues, giving its decision, and entering the judgment, states the facts presented by the concerned parties.

Not all cases involve simple and brief facts. Often the facts are stated in elaborate detail and are complicated.

Understanding the facts is essential because the essence of case law research requires locating cases with similar factual circumstances. A case with like facts will often deal with issues identical to those in the problem being researched.

Cases resolve legal disputes presented by the concerned parties. Legal issues emerge from the disputed facts presented by the parties. However, the court finally determines the legal issues upon which the court is called to decide.

Sometimes, there may be only one legal issue based on simple facts. The statement of law made by the court on such an issue will be its holding (the ratio decidendi) .

On the other hand, some cases may involve several issues, and the court may have to give its ruling on all such issues.

The researcher’s task is to pick up only such issues and rulings relevant to the matter under consideration, leaving out the rest. A researcher often has to deal with many cases, each containing several legal issues. Therefore, the researcher should first select the most relevant cases and then pick up only those issues and rulings relevant to some aspects of the study.

4. Decision

A decision is the court’s conclusion. The conclusion is based on the particular facts of the case and the legal rule or principle that the court applies to the facts. The effect of a decision is to resolve the disputed issue.

For example , a civil case determines the rights and liabilities of parties (plaintiff and defendant, or appellant and respondent) , declares who wins and who loses, and provides the relief and remedies accordingly. In a criminal case, it determines whether the accused/defendant is liable for the alleged offence. The decision of the court is the outcome of the case.

5. Judgment

The term judgment is used in two senses.

In its limited sense, it refers to the ultimate order of the court, such as an order that dismisses an appeal, determines the damages payable by a party, or determines the punishment.

In its general sense, the word refers to the whole case- issues, the decision and the reasons the court gives for its decision.

6. Judicial Reasoning

Reasoning is the process the court uses in choosing a rule and applying it to the facts of the case it is considering. The rule may be found in a constitutional or statutory provision, administrative regulations, court rules, cases decided earlier, a customary practice, or any other source recognizable judicially.

The rule may also be found in unwritten principles or concepts such as the ‘principles of natural justice, judicial policy’.

The reasoning is the court’s analysis and justification for deciding the case the way it did. In a standard law system like India, cases play an essential role in legal reasoning and analysis.

7. Ratio Decidendi and Obiter Dicta

A decision of the court has two aspects:

i. What the case decides between the parties? and ii. What principle it lays down?

It is not everything said by a judge when giving judgment that constitutes a precedent. Law quality relates to the principle behind a decision. The focus on which the case was determined is the only aspect of a judge’s ruling that serves as an authority for other judges. That which binds is called its ratio decidendi , i.e., the rule of law .

During the judgment, a judge must let various observations not precisely relevant to the issue before him. These observations are obiter dicta . They are without binding authority but are nonetheless important.

A statement made by a judge during a ruling that might not be entirely pertinent to the matter at hand is known as an obiter dictum .

Ratio decidendi is the rule acted upon by the court and becomes a precedent, whereas an obiter dictum suggests the trend of the courts’ thinking but not the rule of law.

Ratio and dicta tend to shade into each other. The rations have law quality and are binding on lower courts; the dicta, too, have law quality but are not binding at all.

Though rations of a higher court are binding on lower courts, the rations of lower court decisions have only persuasive force in higher courts like that of a dictum. Some dicta are so authoritative that the decision between ratio and dictum is reduced to a vanishing point. Dicta, which have no force, are propositions stated by way of illustration or on hypothetical facts.

Case analysis is a specific feature of legal research. One of the important sources of law, especially in common law countries, is judicial precedents. The study of decided case laws is integral to legal research.

Read Next: 1. What Is Case Law Research and Its Advantages and Disadvantages? 2. What Are Case Comments and Their Significance in Legal Analysis? 3. What Do You Mean by Citation of Cases? 4. What Is Factual Proposition and Its Importance?

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• Introduction

The case study creation process

Types of case studies, benefits and limitations.

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• Table Of Contents

case study , detailed description and assessment of a specific situation in the real world created for the purpose of deriving generalizations and other insights from it. A case study can be about an individual, a group of people, an organization, or an event, among other subjects.

By focusing on a specific subject in its natural setting, a case study can help improve understanding of the broader features and processes at work. Case studies are a research method used in multiple fields, including business, criminology , education , medicine and other forms of health care, anthropology , political science , psychology , and social work . Data in case studies can be both qualitative and quantitative. Unlike experiments, where researchers control and manipulate situations, case studies are considered to be “naturalistic” because subjects are studied in their natural context . ( See also natural experiment .)

The creation of a case study typically involves the following steps:

• The research question to be studied is defined, informed by existing literature and previous research. Researchers should clearly define the scope of the case, and they should compile a list of evidence to be collected as well as identify the nature of insights that they expect to gain from the case study.
• Once the case is identified, the research team is given access to the individual, organization, or situation being studied. Individuals are informed of risks associated with participation and must provide their consent , which may involve signing confidentiality or anonymity agreements.
• Researchers then collect evidence using multiple methods, which may include qualitative techniques, such as interviews, focus groups , and direct observations, as well as quantitative methods, such as surveys, questionnaires, and data audits. The collection procedures need to be well defined to ensure the relevance and accuracy of the evidence.
• The collected evidence is analyzed to come up with insights. Each data source must be reviewed carefully by itself and in the larger context of the case study so as to ensure continued relevance. At the same time, care must be taken not to force the analysis to fit (potentially preconceived) conclusions. While the eventual case study may serve as the basis for generalizations, these generalizations must be made cautiously to ensure that specific nuances are not lost in the averages.
• Finally, the case study is packaged for larger groups and publication. At this stage some information may be withheld, as in business case studies, to allow readers to draw their own conclusions. In scientific fields, the completed case study needs to be a coherent whole, with all findings and statistical relationships clearly documented.

Case studies have been used as a research method across multiple fields. They are particularly popular in the fields of law, business, and employee training; they typically focus on a problem that an individual or organization is facing. The situation is presented in considerable detail, often with supporting data, to discussion participants, who are asked to make recommendations that will solve the stated problem. The business case study as a method of instruction was made popular in the 1920s by instructors at Harvard Business School who adapted an approach used at Harvard Law School in which real-world cases were used in classroom discussions. Other business and law schools started compiling case studies as teaching aids for students. In a business school case study, students are not provided with the complete list of facts pertaining to the topic and are thus forced to discuss and compare their perspectives with those of their peers to recommend solutions.

In criminology , case studies typically focus on the lives of an individual or a group of individuals. These studies can provide particularly valuable insight into the personalities and motives of individual criminals, but they may suffer from a lack of objectivity on the part of the researchers (typically because of the researchers’ biases when working with people with a criminal history), and their findings may be difficult to generalize.

In sociology , the case-study method was developed by Frédéric Le Play in France during the 19th century. This approach involves a field worker staying with a family for a period of time, gathering data on the family members’ attitudes and interactions and on their income, expenditures, and physical possessions. Similar approaches have been used in anthropology . Such studies can sometimes continue for many years.

Case studies provide insight into situations that involve a specific entity or set of circumstances. They can be beneficial in helping to explain the causal relationships between quantitative indicators in a field of study, such as what drives a company’s market share. By introducing real-world examples, they also plunge the reader into an actual, concrete situation and make the concepts real rather than theoretical. They also help people study rare situations that they might not otherwise experience.

Because case studies are in a “naturalistic” environment , they are limited in terms of research design: researchers lack control over what they are studying, which means that the results often cannot be reproduced. Also, care must be taken to stay within the bounds of the research question on which the case study is focusing. Other limitations to case studies revolve around the data collected. It may be difficult, for instance, for researchers to organize the large volume of data that can emerge from the study, and their analysis of the data must be carefully thought through to produce scientifically valid insights. The research methodology used to generate these insights is as important as the insights themselves, for the latter need to be seen in the proper context. Taken out of context, they may lead to erroneous conclusions. Like all scientific studies, case studies need to be approached objectively; personal bias or opinion may skew the research methods as well as the results. ( See also confirmation bias .)

Business case studies in particular have been criticized for approaching a problem or situation from a narrow perspective. Students are expected to come up with solutions for a problem based on the data provided. However, in real life, the situation is typically reversed: business managers face a problem and must then look for data to help them solve it.