Strain differences in emotionality: Open-field and conditioned avoidance behavior in the rat.

1 January 1967

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

Vol. 63 (2) , 335-338
https://doi.org/10.1037/h0024363

Abstract

RATS OF 5 HIGHLY INBRED, UNIFORMLY REARED STRAINS WERE TESTED IN AN OPEN FIELD FOR 4 DAYS, THEN GIVEN 50 TRIALS OF ESCAPE AVOIDANCE CONDITIONING (CONDITIONED AVOIDANCE RESPONSE-CAR). SIGNIFICANT STRAIN DIFFERENCES OCCURRED IN CAR NUMBERS, AVOIDANCE AND ESCAPE LATENCIES, INTERTRIAL CROSSINGS, TRIALS TO 1ST AVOIDANCE AND CS AVERSION, AND IN OPEN-FIELD DEFECATION AND AMBULATION. AMBULATION WAS SHOWN TO BE STABLE OVER MANY GENERATIONS, BUT DEFECATION WAS LESS SO. INTERCORRELATIONS OF THE MEASURES WERE ANALYZED AND THE RELATIONSHIP BETWEEN CAR AND OPEN-FIELD BEHAVIOR WAS COMPARED WITH THAT FOUND AMONG 2 OTHER PAIRS OF STRAINS, BIDIRECTIONALLY SELECTED FOR THESE BEHAVIORAL PHENOTYPES. (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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