Find over 25,000 psychological definitions


Merkel’s law

the principle that equal suprathreshold (above-threshold) differences in sensation correlate with equal differences in stimuli intensity. [Julius Merkel (1834–1900), German psychologist]

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

January 21st 2025

medial preoptic area (mPOA)

Sorry, "medial-preoptic-area-mpoa" is not in the Dictionary of Psychology. Please report to APA if you believe this is an error.