title: Temporal discrimination in pigeons.
abstract: Pigeons trained to peck a lighted key were presented with a key that was alternately dark and lighted. The key was dark for intervals of from 3 to 30 seconds. Pecking of the lighted key was reinforced only after the shortest or, in a second experiment, the longest interval that the key was dark. The pigeons were able to discriminate the duration of the dark interval.
mesh_terms: D000818:Animals; D001519:Behavior; D010856:Columbidae; D004193:Discrimination Learning; D012054:Reinforcement, Psychology
keywords: BEHAVIOR