“…The effects of impoverished home and school environments on the disadvantaged child are well documented by studies that compared social-class groups. There is evidence that deprived children with lower socioeconmic status have deficits in linguistic development (Bernstein, 1960(Bernstein, , 1961a(Bernstein, , 1961bDeutsch, RI., 1967;John, 1963;King, 1967;Raph, 1965;Ryckman, 1967), mental ability (Lesser, Fifer, & Clark, 1965), auditory and visual discrimination (Clark & Richards, 1966;Deutsch, M., 1967;Katz & Deutsch, 1964;Katz & Deutsch, 1965), conceptual and categorizing abilities (Deutsch, C., 1966;Deutsch, M., 1967;Klaus & Gray, 1968;Kofsky, 1967;Ryckman, 1967), and on tests of intelligence (Coleman, 1966;Jensen, 1969;Karp & Sigel, 1965).…”