Proaction in the Recovery from Practice under Visual Displacement

Abstract

Two experiments to test a proaction theory of recovery from visual displacement learning without apparent re-afference are presented. In Exp. I, the recovery of Ss following 2 successive displacements was compared with that of Ss following 1 displacement. The recoveries differed significantly in over-all extent but did not differ significantly in trend. In Exp. II, the recoveries of Ss following 2 successive displacements, in which the first would, by the proaction hypothesis, lead to different recoveries, were significantly different both in over-all extent and in trend. It is concluded that the recovery from practice under visual displacement is largely a proaction effect.