Discrimination learning as a function of reversal and nonreversal shifts.

Abstract

The first experiment reported is a comparison of reversal and nonreversal shifts: the second eliminates the partial reinforcement following a nonreversal shift. In Exp. I found that the nonreversal shift was accomplished more readily than the reversal shift. In Exp. II found that the reversal group was retarded. The results are interpreted as supporting the single-unit S-R theory of Spence, while being inconsistent with the sequential S-R theory of Lawrence. 11 references. (PsycINFO Database Record (c) 2006 APA, all rights reserved)