DEVELOPMENT OF TEMPORALLY SPACED RESPONDING IN RELATION TO SCHEDULE VALUE IN RATS

1 January 1973

journal article
Published by The Japanese Psychological Association in Japanese Psychological Research

Vol. 15 (4) , 159-163
https://doi.org/10.4992/psycholres1954.15.159

Abstract

Rats were trained with food reinforcement under a differential-reinforcement-of-low-rate (DRL) schedule for 2 hours a day for 30 days. The DRL schedule value was either 5, 10, 20, 40, 80, or 160sec. Prolonged training decreased the frequency of shorter interresponse times (IRTs) and increased the frequency of longer IRTs in all rats. The IRT peaks characteristic of temporal discrimination were obtained under all values of DRLs. Analysis of median IRTs, response rates and reinforcement frequency indicated that performances under DRL 20 or 40-sec were consistent within sessions and stabilized in the limited training time. Responding under DRL 5 or 10-sec decreased within each session because of satiation. The IRT peaks under DRL 80 and 160-sec were located at about half of the schedule value.

Keywords

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