APERIODICITY AS A FACTOR IN CHOICE.
Four pigeons were trained to peck at either of two response-keys. Pecks at either key occasionally produced a secondary reinforcer, in the presence of which further pecks occasionally produced food, the primary reinforcer. All pigeons showed a consistent preference for variable (as compared to fixed) interval schedules of primary reinforcement.
D000818:Animals; D001717:Birds; D002755:Choice Behavior; D010856:Columbidae; D003213:Conditioning, Psychological; D012054:Reinforcement, Psychology; D012106:Research
BIRDS; CONDITIONING (PSYCHOLOGY); EXPERIMENTAL LAB STUDY; REINFORCEMENT (PSYCHOLOGY)