brightness

n. the perceptual correlate of light intensity. The brightness of a stimulus depends on its amplitude (energy), wavelength, the adaptation state of the observer, and the nature of any surrounding or intervening stimuli. See luminance; brightness contrast.

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Psychology term of the day

January 13th 2025

discontinuity hypothesis

in Gestalt psychology, the viewpoint that emphasizes the role of sudden insight and perceptual reorganization in successful discrimination learning and problem solving. According to this view, a correct answer is only recognized when its relation to the issue as a whole is discovered. Also called discontinuity theory. Compare continuity hypothesis. See also aha experience; all-or-none learning; eureka task.