Temporal characteristics of the coolidge effect in male rat copulatory behavior.

1 January 1968

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

Vol. 65 (3, Pt.1) , 447-452
https://doi.org/10.1037/h0025841

Abstract

AFTER 12 LONG-EVANS MALE RATS HAD COPULATED UNINTERRUPTEDLY WITH SINGLE FEMALES FOR 90 MIN., THEY HAD ANOTHER 90 MIN. WITH FRESH FEMALES PRESENTED AFTER DELAYS OF 0, 1.5, 3, 4.5, 6, 12, 18, OR 24 HR. INITIAL INTROMISSION LATENCIES WITH 2ND FEMALES INCREASED WITH INTERVAL DURATIONS. FAILURES TO ACHIEVE INTROMISSION OR EJACULATION WERE MOST PRONOUNCED FOLLOWING 6-18 HR. DELAYS, ALTHOUGH TOTAL EJACULATORY FREQUENCY AND RATE OF RECOVERY FROM EJACULATION WERE REDUCED FROM CONTROL LEVELS FOLLOWING ALL INTERVALS. 1ST SERIES INTROMISSION FREQUENCIES WITH 2ND FEMALES APPROXIMATED 1ST SERIES CONTROL LEVELS FOLLOWING INTERVALS OF 3 HR. OR MORE. RATES OF COPULATION WITH 2ND FEMALES WERE GREATER THAN WITH 1ST FEMALES FOR ALL INTERVALS. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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