Supplementary report: Shock intensity and unconditioned responding in a shuttle box.

Abstract

Kimble (1955) studied UCRs of rats to different intensities of shock. He found that shock elicited 2 kinds of responses, "flinching" at lower intensities and "jumping," which increased in frequency as shock intensity increased. Since the order of shock presentation may influence the frequency of responding and the dimensions of the shuttlebox have been found to limit the response repertoire of S, the present study was designed to replicate Kimble's with modification of these variables. The findings support the generality of Kimble's results. (PsycINFO Database Record (c) 2006 APA, all rights reserved)