Effect of nonrewarded and partially rewarded placements on resistance to extinction in the rat.
D000818:Animals; D001522:Behavior, Animal; D003216:Conditioning, Operant; D003213:Conditioning, Psychological; D004193:Discrimination Learning; D005108:Extinction, Psychological; D008124:Locomotion; D008297:Male; D008568:Memory; D051381:Rats; D012055:Reinforcement Schedule; D012201:Reward