DixonW. J., & MasseyF. J.Introduction to statistical analysis. (2nd ed.) New York: McGraw-Hill, 1957.
2.
ForgusR. H.Advantage of early over late perceptual experience in improving form discrimination. Canad. J. Psychol., 1956, 10, 147–155.
3.
GibsonE. J., & WalkR. D.The effect of prolonged exposure to visually presented patterns on learning to discriminate them. J. comp. physiol. Psychol., 1956, 49, 239–242.
4.
GibsonE. J.WalkR. D.PickH. L., & TigheT. J.The effect of prolonged exposure to visual patterns on learning to discriminate similar and different patterns. J. comp. physiol. Psychol., 1958, 51, 584–587.
5.
GibsonE. J.WalkR. D., & TigheT. J.Enhancement and deprivation of visual stimulation during rearing as factors in visual discrimination learning. J. comp. physiol. Psychol., 1959, 52, 74–81.
6.
HymovitchB.The effects of experimental variation on problem solving in the rat. J. comp. physiol. Psychol., 1952, 45, 313–321.
7.
WalkR. D.GibsonE. J.PickH. L., & TigheT. J.Further experiments on prolonged exposure to visual forms: the effect of single stimuli and prior reinforcement. J. comp. physiol. Psychol., 1958, 51, 483–487.
8.
WalkR. D.GibsonE. J.PickH. L., & TigheT. J.The effectiveness of prolonged exposure to cutouts vs. painted patterns for facilitation of discrimination. J. comp. physiol. Psychol., 1959, 52, 519–521.
