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Abstract-Versus-Representational Dimension the degree to which a work of art is nonrepresentational versus representational of reality. Representational art is characterized by a …

Abstract Thinking thinking characterized by the use of general ideas or concepts. Compare concrete thinking. See also abstract attitude; categorical thought.

Abstract Learning acquiring knowledge of general or intangible material, such as the meanings of concepts and propositions and the logical and systematic relations between them.

Abstract Idea an idea or concept that has no specific material referent, such as justice, or one that applies to a great many …

Abstract Attitude a cognitive style that involves the ability to grasp essentials and common properties, to keep different aspects of a situation in mind …

Abstinence Syndrome an older term for the characteristic set of physiological and behavioral events that may accompany rapid withdrawal from dependence-inducing substances.

Abstinence Delirium a form of delirium that may result from rapid withdrawal from alcohol or drugs of abuse. See alcohol withdrawal delirium; delirium tremens.

Absorption Curve a graph that plots the number of photons of light of different wavelengths absorbed by a photopigment.

Absolutism n. the philosophical position that there are absolute ethical, aesthetic, or epistemological values. Phenomena are believed to have a fixed reality; thus, …

Absolute Value a number considered without regard to its algebraic sign (i.e., whether it is positive or negative). For example, assume that …