A line of eclectic social science theories and research with its roots in a Soviet theory pioneered by Sergei Rubinstein in the 1930s, seeking to understand human activities as systemic and socially situated phenomena and to go beyond paradigms of reflexology and classical conditioning.

(cognitive science, psychology) A theory of categorization in cognitive science, particularly in psychology and cognitive linguistics.

(mathematics, computer science) A branch of mathematical logic and theoretical computer science concerned with types.

The idea that morality is simply a cultural manner that hides man's innate amorality.

(mathematics) The study of harmonic functions.

(physics) A proposed mechanism, involving a rotating, convecting, and electrically conducting fluid, by which a celestial body generates and maintains a magnetic field over astronomical time scales.

(metaphysics) An alternative to standard possible worlds semantics in which an individual can exist in only one world, while other possible worlds contain (different) counterparts to that individual, and in which the modality operators (necessity, possibility) are replaced by quantifiers over possible worlds.

Alternative form of X-bar theory

Synonym of white replacement theory.

Abbreviation of attainable region theory.