title: A role of stimulus compounds in eliciting responses: relatively spaced extinction following massed acquisition.
mesh_terms: D000818:Animals; D003216:Conditioning, Operant; D003463:Cues; D005108:Extinction, Psychological; D008297:Male; D008570:Memory, Short-Term; D051381:Rats; D012055:Reinforcement Schedule; D012201:Reward; D013997:Time Factors