Least Interest Principle Of

LEAST EFFORT, PRINCIPLE OF.

LEAST SQUARES, LAW OF. See PROBABILITY THEORY/LAWS.

LEE-BOOT EFFECT. See OLFACTION/ SMELL, THEORIES OF.

LEE-HENDRICKS MODEL. See LOVE, THEORIES OF.

LEFT-RIGHT EFFECT. See DEVELOPMENTAL THEORY.

LEIBNITZ'S MONAD THEORY. See

HERBART'S DOCTRINE OF APPERCEPTION.

LENIENCY EFFECT. See EXPERIMENTER EFFECTS.

LENS MODEL. The Hungarian-born American psychologist Egon Brunswik (1903-1955) proposed this metaphor to emphasize the probabilistic relationship between "ecological/ distal criterion" (an aspect or feature of an environmental context to which an organism must adapt functionally, and which the organism cannot perceive directly but judges it as best it can from sensory cues) and the sensory cues of "imperfect ecological validity" (a dimension/aspect of a proximal/near stimulus, such as the monocular and binocular depth cues one employs in making depth perception assessments) whereby an organism judges the ecological criterion. In the lens model, sensory cues are hypothesized as being focused by cognitive processes in a manner similar to a lens with rays of light falling onto the object or surface of the ecological criterion. Brunswik refers to the correlation between the sensory cue(s) and the imperceptible ecological criterion as the "ecological validity" of the cue(s). See also PERCEPTION (II. COMPARATIVE APPRAISAL, THEORIES OF; PROBABILISTIC FUNCTIONALISM, THEORY OF. REFERENCE

Brunswik, E. (1952). The conceptual framework of psychology. Chicago: University of Chicago Press. LEONARDO'S PARADOX. See VISION/ SIGHT, THEORIES OF.

LEPLEY HYPOTHESIS/LEPLEY-HULL HYPOTHESIS. See SERIAL POSITION EFFECT.

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