humans, societies, institutions, and any topic that has changed over time. Traditionally, the study of history has been considered a part of the humanities. In modern academia, whether or not history remains a humanities-based subject is contested. In the United States the National Endowment for the Humanities includes history in its definition of humanities (as it does for applied linguistics). However, the National Research Council classifies history as a social science. The historical method comprises the techniques and guidelines by which historians use primary sources and other evidence to research and then to write history. The Social Science History Association, formed in 1976, brings together scholars from numerous disciplines interested in social history. Law The social science of law, jurisprudence, in common parlance, means a rule that (unlike a rule of ethics) is capable of enforcement through institutions. However, many laws are based on norms accepted by a community and thus have an ethical foundation. The study of law crosses the boundaries between the social sciences and humanities, depending on one's view of research into its objectives and effects. Law is not always enforceable, especially in the international relations context. It has been defined as a "system of rules", as an "interpretive concept" to achieve justice, as an "authority" to mediate people's interests, and even as "the command of a sovereign, backed by the threat of a sanction". However one likes to think of law, it is a completely central social institution. Legal policy incorporates the practical manifestation of thinking from almost every social science and the humanities. Laws are politics, because politicians create them. Law is philosophy, because moral and ethical persuasions shape their ideas. Law tells many of history's stories, because statutes, case law and codifications build up over time. And law is economics, because any rule about contract, tort, property law, labour law, company law and many more can have long-lasting effects on the distribution of wealth. The noun law derives from the Old English , meaning something laid down or fixed and the adjective legal comes from the Latin word . Linguistics Linguistics investigates the cognitive and social aspects of human language. The field is divided into areas that focus on aspects of the linguistic signal, such as syntax (the study of the rules that govern the structure of sentences), semantics (the study of meaning), morphology (the study of the structure of words), phonetics (the study