The law of effect and CR contingent modification of the UCS.
D000818:Animals; D001244:Association; D003214:Conditioning, Classical; D003215:Conditioning, Eyelid; D003216:Conditioning, Operant; D004435:Eating; D004597:Electroshock; D009541:Nictitating Membrane / Q000502:physiology; D011582:Psychological Theory; D011817:Rabbits; D011930:Reaction Time; D012018:Reflex; D012054:Reinforcement, Psychology; D012201:Reward; D012472:Salivation