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Legal realism is a naturalistic approach to law. It is the view that jurisprudence should emulate the methods of natural science, i.e., rely on empirical evidence. Hypotheses must be tested against observations of the world.
Legal realists believe that legal science should only investigate law with the value-free methods of natural sciences. These are called 'sciences of the real' in some languages (e.g. German: Realwissenschaften). Some legal realists (e.g. Leon Petra?ycki and Max Weber) also hold that there should exist a legal dogmatics, which is independent of legal science proper. These scholars consider legal dogmatics a science in its own right, despite its being a non-real, or formal, science. Even so, the focus of all legal realists is on legal science proper.
Due to their value-free approach, legal realists are opposed to natural law traditions. Legal realists contend that these traditions are historical and/or social phenomena and that they should be explained by a variety of psychological and sociological hypotheses. They also oppose any form of linguistic turn in jurisprudence. They regard the linguistic turn, when applied to law, as a sort of 'emasculation' (Enrico Pattaro) of legal phenomena. This is because legal realists conceive legal phenomena as psychical phenomena, and, notably, as a form of moral motivation of human behavior, which should be investigated with the methods of psychology and/or neurosciences. This means that legal realists oppose most versions of contemporary legal positivism.
A further difference from all sorts of legal positivism is that legal realists refuse to confine their investigations to state law and/or positive law. Moreover, legal realists have a conception of law that stretches far beyond legal pluralism--so popular in many versions of classical and contemporary sociology of law. This is one of the reasons why legal realism cannot be regarded as a sort of sociology of law (other reasons being: legal realists' psychologism and their refusal of the linguistic turn--a turn that affected, too, sociology of law). Apart from Max Weber (who, owing to a variety of reasons, is mostly conceptualized as sociologist rather than as a legal realist), there are two strands of legal realism in this sense: Scandinavian legal realism, founded by Axel Hägerström (1868–1939), and Polish-Russian legal realism, founded by Leon Petra?ycki (1867–1931). Both realisms, owing to their similarities (and despite their founders' ignoring one another), are sometimes referred to as 'continental legal realism' (in the singular).
In English-speaking countries the phrase 'legal realism' has often a somewhat different and more restricted meaning. It is used to refer to a conception of adjudication rather than of law in general. However, some legal realists in this other sense, including the founder of this movement, Oliver Wendell Holmes Jr., reduced law to the activity of courts and other state officials, thus proposing a kind of naturalistic and value-free reduction of law (a conception, though, that all Continental legal realists would reject, inter alia, as excessively narrow). It is to this other kind of legal realism--also called 'American legal realism'--that this article is devoted.
American legal realists (henceforth: realists) believe that there is more to adjudication than the mechanical application of known legal principles to uncontroversial fact-finding as legal formalism believes. Some realists believe that one can never be sure that the facts and law identified in the judge's reasons were the actual reasons for the judgment, whereas other realists accept that a judge's reasons can often be relied upon, but not all of the time. Realists believe that the legal principles that legal formalism treat as uncontroversial actually hide contentious political and moral choices.
Realism was treated as a conceptual claim for much of the late 20th century due to H. L. A. Hart's misunderstanding of the theory. Hart was an analytical legal philosopher who was interested in conceptual analysis of concepts such as the concept of 'law'. This entailed identifying the necessary and sufficient conditions for the use of the concept 'law'. When realists such as Oliver Wendell Holmes pointed out that individuals embroiled in the legal system generally wanted to know what was going to happen, Hart assumed that they were offering the necessary and sufficient conditions for the use of the concept 'law'. Nowadays, legal theorists tend to recognise that the realists and the conceptual lawyers were interested in different questions. Realists are interested in methods of predicting judges with more accuracy, whereas conceptual lawyers are interested in the correct use of legal concepts.
Legal realism was primarily a reaction to the legal formalism of the late 19th century and early 20th century, and was the dominant approach for much of the early 20th century. It succeeded in its negative aspiration of casting doubt upon formalist assumptions that judges always did what they said so that it is often said that 'we are all realists now.' However, realism failed in its positive aspiration of discovering a better way of predicting how judges would behave than relying on the reasons given by judges.
A theory of law and legal reasoning that arose in the early decades of the twentieth century broadly characterized by the claim that law can be best understood by focusing on what judges actually do in deciding cases, rather than on what they say they are doing. The central target of legal realism was legal formalism: the classical view that judges don't make law, but mechanically apply it by logically deducing uniquely correct legal conclusions from a set of clear, consistent, and comprehensive legal rules. American legal realism has aptly been described as "the most important indigenous jurisprudential movement in the United States during the twentieth century". Though most legal scholars today would agree that some aspects of legal realism were misguided or over-stated, its enduring influence on legal thought and legal education has been profound.
Although the American legal realist movement first emerged as a cohesive intellectual force in the 1920s, it drew heavily upon a number of prior thinkers and was influenced by broader cultural forces. In the early years of the twentieth century, formalist approaches to the law had been forcefully criticized by thinkers such as Roscoe Pound, John Chipman Gray, and Benjamin Cardozo. Philosophers such as John Dewey had held up empirical science as a model of all intelligent inquiry, and argued that law should be seen as a practical instrument for advancing human welfare. Outside the realm of law, in fields such as economics and history, there was a general "revolt against formalism," a reaction in favor of more empirical ways of doing philosophy and the human sciences. But by far the most important intellectual influence on the legal realists was the thought of the American jurist and Supreme Court Justice Oliver Wendell Holmes, Jr.
Holmes is a towering figure in American legal thought for many reasons, but what the realists drew most from Holmes was his famous prediction theory of law, his utilitarian approach to legal reasoning, and his "realist" insistence that judges, in deciding cases, are not simply deducing legal conclusions with inexorable, machine-like logic, but are influenced by ideas of fairness, public policy, and other personal and conventional values.
All these themes can be found in Holmes's famous 1897 essay, "The Path of the Law". There Holmes attacks formalist approaches to judicial decision making and states a pragmatic definition of law: "The prophecies of what the courts will do in fact, and nothing more pretentious, are what I mean by the law". If law is prophecy, Holmes continues, we must reject the view of "text writers" who tell us that law "is something different from what is decided by the courts of Massachusetts or England, that it is a system of reason that is a deduction from principles of ethics or admitted axioms or what not, which may or may not coincide with the decisions".
Holmes next introduces his most important and influential argument, the "bad-man" theory of law: "[I]f we take the view of our friend the bad man we shall find that he does not care two straws" about either the morality or the logic of the law. For the bad man, "legal duty" signifies only "a prophecy that if he does certain things he will be subjected to disagreeable consequences by way of imprisonment or compulsory payment". The bad man cares nothing for legal theorizing and concerns himself only with practical consequences. In the spirit of pragmatism, Holmes suggests that this is a useful way of laying bare the true meaning of legal concepts.
The utilitarian or instrumentalist flavor of "The Path of the Law" also found favor with the realists. The purpose of the law, Holmes insisted, was the deterrence of undesirable social consequences: "I think that the judges themselves have failed adequately to recognize their duty of weighing considerations of social advantage." Before the Civil War, this conception of adjudication as a form of social engineering had been widely shared by American judges, but in the late nineteenth century it had fallen out of favor. One of the aspirations of both Holmes and the realists was to revive it.
Drawing upon Holmes and other critics of legal formalism, a number of iconoclastic legal scholars launched the legal realist movement in the 1920s and 30s. Among the leading legal realists were Karl Llewellyn, Jerome Frank, Herman Oliphant, Underhill Moore, Walter Wheeler Cook, Leon Green, and Felix Cohen. Two American law schools, Yale and Columbia, were hotbeds of realist thought. Realism was a mood more than it was a cohesive movement, but it is possible to identify a number of common themes. These include:
Legal realism had its heyday from the 1920s to the 1940s. In the 1950s, legal realism was largely supplanted by the legal process movement, which viewed law as a process of "reasoned elaboration" and claimed that appeals to "legislative purpose" and other well-established legal norms could provide objectively correct answers to most legal questions. In his 1961 book The Concept of Law, British legal theorist H. L. A. Hart dealt what many scholars saw as a "decisive blow" to legal realism, by attacking the predictive theory of law that many realists had taken over from Holmes. Hart pointed out that if a law is just a prediction of what courts will do, a judge pondering the legal merits of a case before him is really asking, "How will I decide this case?" As Hart notes, this completely misses the fact that judges use legal rules to guide their decisions, not as data to predict their eventual holdings.
Many critics have claimed that the realists exaggerated the extent to which law is "riddled" with gaps, contradictions, and so forth. The fact that most legal questions have simple, clear-cut answers that no lawyer or judge would dispute is difficult to square with the realists' strong claims of pervasive legal "indeterminacy". Other critics, such as Ronald Dworkin and Lon Fuller, have faulted legal realists for their attempt sharply to separate law and morality.
Though many aspects of legal realism are now seen as exaggerated or outdated, most legal theorists would agree that the realists were successful in their central ambition: to refute "formalist" or "mechanical" notions of law and legal reasoning. It is widely accepted today that law is not, and cannot be, an exact science, and that it is important to examine what judges are actually doing in deciding cases, not merely what they say they are doing. As ongoing debates about judicial activism and judicial restraint attest, legal scholars continue to disagree about when, if ever, it is legitimate for judges to "make law", as opposed to merely "following" or "applying" existing law. But few would disagree with the realists' core claim that judges (for good or ill) are often strongly influenced by their political beliefs, their personal values, their individual personalities, and other extra-legal factors.
A statistical natural language processing method has been applied to automatically predict the outcome of cases tried by the European Court of Human Rights (violation or no violation of a specific article) based on their textual contents, reaching a prediction accuracy of 79%. A subsequent qualitative analysis of these results provided some support towards the theory of legal realism. The authors write: "In general, and notwithstanding the simplified snapshot of a very complex debate that we just presented, our results could be understood as lending some support to the basic legal realist intuition according to which judges are primarily responsive to non-legal, rather than to legal, reasons when they decide hard cases."