An analysis of simple reaction times and choice reaction times for mentally retarded children

Abstract

Simple reaction times (SRTs) and choice reaction times (CRTs) for mentally retarded (MR) children and normal(N) children matched on MA were analyzed. The main results were as follows;1)In SRT experiments, there were great RT differences between MR group and N group, but in CRT experiments, no significant CRT differences between them were noticed. 2) Between MR-C group, selected from MR group by the condition that the members were the same SRT level that N group members, and N group, no significant differences in CRTs were seen. It was inferred that MA 5-8 N children responded on the same way of MR children in CRT tasks that demanded higher mental activities. © 1985, The Japanese Association of Educational Psychology. All rights reserved.