Activation by IMT: An alternative to within-subjects designs

Abstract

The within-Ss design is generally used when activation is varied because of the confounding effects of idiosyncratic patterns of reactivity. The present study investigates the possibility that induced muscular tension (IMT) by the weightlifting method may overcome this problem. The effects of IMT on HR and GSR with between-Ss and within-Ss designs are compared. The physiological functions obtained were found to correspond very closely. © 1969, Psychonomic Journals, Inc.. All rights reserved.