Classical conditioning in the fish: The CS-US interval.

1 June 1963

journal article
Published by American Psychological Association (APA) in Journal of Comparative and Physiological Psychology

Vol. 56 (3) , 578-583
https://doi.org/10.1037/h0041341

Abstract

Prompted by discrepant earlier findings, 3 experiments were conducted on the role of the CS-US interval (0.5, 2.0, or 4.0 sec.) in the classical conditioning of fish--1 with 54 Mollienesia given massed training (1.5 min. between trials), a 2nd with 54 Mollienesia given more spaced training (4 min. between trials), and a 3rd with gold-fish given massed training. Probability and magnitude of response to the CS declined from a maximum at 0.5 sec. in the 1st experiment, but were not significantly related to the CS-US interval in the other 2. Latency of response was least at the 0.5-sec. interval in each case. The results are consistent with the Pavlovian interpretation of delayed conditioning. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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