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.
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References
1.
DayR. H.SingerG.Sensory adaptation and behavioral compensation with spatially transformed vision and hearing. Psychol. Rev., 1967, 67, 307–322.
2.
HamiltonC. R.BossomJ.Decay of prism aftereffects. J. exp. Psychol., 1964, 67, 148–150.
3.
UnderwoodB. J.‘Spontaneous recovery’ of verbal associations. J. exp. Psychol., 1948, 38, 429–439.
4.
WinerB. J.Statistical principles in experimental design. New York: McGraw-Hill, 1962.
