title: SOME PROPERTIES OF SPACED RESPONDING IN PIGEONS.
mesh_terms: D000818:Animals; D001717:Birds; D010856:Columbidae; D007858:Learning; D011930:Reaction Time; D012054:Reinforcement, Psychology; D012106:Research
keywords: BIRDS; EXPERIMENTAL LAB STUDY; LEARNING; REACTION TIME; REINFORCEMENT (PSYCHOLOGY)