Four groups of rats were trained to run an alleyway with one trial per day. Two groups were always deprived when trained while the other two received a partial deprivation schedule. One group of each pair received a continuous reward in the goal box while the other received partial reward. A partial reinforcement effect was found during extinction. The partially deprived groups also showed persistence in extinction. This result extends parallels between the effects of satiation and nonreward upon behaviour.
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