Find over 25,000 psychological definitions


electromagnetic spectrum

the range of wavelengths of electromagnetic radiation from gamma rays (very short waves) to radio waves (very long waves). The human eye is sensitive to only a narrow range of wavelengths of approximately 400 to 700 nm. See spectrum.

Browse dictionary by letter

a b c d e f g h i j k l m n o p q r s t u v w x y z

Psychology term of the day

February 27th 2024

empirically keyed test

empirically keyed test

an assessment in which answers are scored in such a way as to establish differences in responses among groups already known to differ. For example, on a test measuring problem solving, the correct alternative among the response choices would be the one preferred by members of a criterion group who were administered the test previously. See also empirical-criterion keying.