Abstract
Rats were trained with a tone followed by food delivered independently of their behavior on 50% of the trials. Although activity increased during the CS there was no evidence for inhibition of delay as with 100% reward, supporting a conditioned excitement theory of instrumental learning.
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1. This research was supported by National Science Foundation Grant GB-04404. The author was a NSF Predoctoral Fellow.
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Zamble, E. Classical conditioning of excitement anticipatory to food reward: Partial reinforcement. Psychon Sci 10, 115–116 (1968). https://doi.org/10.3758/BF03331434
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DOI: https://doi.org/10.3758/BF03331434