title: STRENGTH OF PREFERENCE FOR FOOD, MAGNITUDE OF FOOD REWARD, AND PERFORMANCE IN INSTRUMENTAL CONDITIONING.
mesh_terms: D003216:Conditioning, Operant; D003213:Conditioning, Psychological; D006815:Hunger; D007858:Learning; D009042:Motivation; D051381:Rats; D011930:Reaction Time; D012106:Research; D012201:Reward
keywords: CONDITIONING (PSYCHOLOGY); EXPERIMENTAL LAB STUDY; HUNGER; LEARNING; MOTIVATION; RATS; REACTION TIME