Anatasi, A. and Foley, J.P. Jr.Differential Psychology . (3rd ed.) New York: Macmillan, 1958.
2.
Casler, L.Maternal Deprivation: A critical review of the literature. Monogr. Soc. Res. Child Developm., 1961, 26, No. 2 (set. no. 80).
3.
Cox, C.M.The early mental traits of three hundred geniuses. Stanford Univer., Calif .: Stanford Univer. Press, 1926.
4.
Dawe, H.C.A study of the effect of an educational program upon language development and related mental functions in young children. J. exp. Educ. , 1942, 11, 200-209.
5.
Deutsch, M.The disadvantaged child and the learning process: some social psychological and developmental considerations. In Education in Depressed Areas, Teachers College Press, H. Passow (Ed.), April, 1963.
6.
Drever, J. A Dictionary of Psychology. Harmondsworth, Middlesex: Penguin, 1958.
7.
Fowler, W.Cognitive learning in infancy and early childhood. Psychology Bull., 1962, 59, 116-152.
8.
Fowler, W.Cognitive stimulation, IQ changes, and cognitive learning in three year old identical twins and triplets. Amer. Psychologist, 1961, 16, 373 (abstract).
9.
Hebb, D.O.The organization of behavior. New York: John Wiley, 1949.
10.
Hunt, J. McV.Intelligence and Experience. New York: Ronald, 1961.
11.
Kroeber, A.L.Anthropology. New York: Harcourt, Brace, 1948.
12.
Luria, A.R. and Yudovich, F.I.Speech and the development of mental process in the child. London: Staples Press, 1959.
13.
McFarlane, Jean W., Allen, Lucille and Honzik, Marjorie P.A developmental study of the behavior problems of normal children between twenty-one months and fourteen years. Univer. Calif. Publ. Child Developm., 1954, 2, 1-122.
14.
Meyers, C.E., and Dingman, H.F.The structure of abilities at the preschool ages: Hypothesized domains. Psychol. Bull., 1960, 57, 514-532.
15.
Yarrow, L.J.Maternal Deprivation: Toward an empirical and conceptual reevaluation. Psychol. Bull., 1961, 58, 459-490.