An experimental test of the continuity and non-continuity theories of discrimination learning.

Abstract

"Two groups of Ss [albino rats], 20 in each group, learned a white-black discrimination problem. Prior to the learning, both groups of Ss were trained for 30 trials to their preferred side, the black and white cues being absent. The experimental group was then given 20 trials in which response to the negative stimulus of the learning situation was rewarded. The control group, on the other hand, was reinforced 50 percent of the time on both the white and black stimuli during this 20-trial pre-learning period. Following a further period of training in which the position preference was eliminated, the regular learning problem was presented. Contrary to the implications of the non-continuity interpretation of discrimination learning, comparison of the experimental and control groups revealed a significant difference in speed of learning . . … The results of the investigation are considered to be in agreement with the continuity type of theory . . …" (PsycINFO Database Record (c) 2006 APA, all rights reserved)