title: Presidential address, 1983.
mesh_terms: D000818:Animals; D001244:Association; D003214:Conditioning, Classical / Q000502:physiology*; D003215:Conditioning, Eyelid; D004285:Dogs; D006801:Humans; D008954:Models, Biological; D009132:Muscles / Q000502:physiology*; D011817:Rabbits; D012055:Reinforcement Schedule