Longitudinal IQ Outcomes of the Mother-Child Home Program, 1967-1973.
MADDEN, JOHN; LEVENSTEIN, PHYLLIS; and LEVENSTEIN, SIDNEY. Longitudinal IQ Outcomes of the Mother-Child Home Program. CHILD DEVELOPMENT, 1976, 47, 1015-1025. Low-income families participated in several variations of a home-based intervention program which focused on modeling verbal interaction between mother and child around selected toys and books. Long-term results from a quasiexperimental design suggested that the amount of IQ difference between groups was dependent on the amount of program intervention within the range of conditions examined. Initial short-term experimental results have not confirmed this conclusion and indicate the need for increased attention to the conduct of the program and for more informative experimental research.