Golden, M., Burns, B., Bridger, W., Moss, A., Social class differentiation in cognitive development among black preschool children. Child Development, 1971, 42, 37-46.
2.
Jensen, A., How much can we boost our IQ and scholastic achievement? Harvard Educational Review, 1969, 39, 1-123.
3.
McCall, R., Hogarty, P., Jurlbury, N., Transitions in infant sensori-motor development and prediction of childhood IQ. American Pathologist, 1972, 27, 728-748.
4.
Palmer, F., Socio-economic status and intellective performance among Negro infants. Journal of Genetic Psychology, 1964, 69, 3-44.
5.
Piaget, J., The Origins of Intelligence in Children. New York: Norton, 1952.
6.
Scarr-Salapatec, S., Race, social class and IQ. Science, 1971, 174, 1285-1295.
7.
Wasch, T., Uzgiris, I., Hunt, J., Cognitive development in infants of different age levels and from different environmental backgrounds: An exploratory investigation. Merrill-Palmer Quarterly, 1971, 17, 283-317.
8.
Westinghouse Learning Corporation. The impact of Headstart: The evaluation of the Headstart experiences on children's cognitive and affective development. Athens, Ohio: Ohio University 1969.
9.
Williams, J., Scott, R., Growth and development and its relation to child-rearing practices in groups of Negro infants. Child Development, 1953, 24. 103-121.
