Experiments on the Complete Suppression of Stammering

Abstract

WE have been conducting simple physical experiments upon people severely handicapped by various forms of stammering or stuttering, and have obtained results of surprising generality. Under certain conditions of external control, these people may be induced to speak fluently at normal speeds, and with no difficulty. The experiments clearly illustrate the fact that stammering (at least of all the varied classes examined) is caused, not by motor, but by perceptual faults.