light–dark cycle

the schedule according to which the lights are turned on and off in rooms housing research animals. A 12-hour light–dark cycle, in which the lights are on for 12 consecutive hours and then off for 12 consecutive hours, is commonly used.

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

May 8th 2024

rating

n. a score assigned to a person or object on a numerical scale (e.g., 1 to 5) or a verbal scale (e.g., very good to very poor). See rating scale.