Based on Vygotsky's notion of the zone of proximal development, this study aimed to determine the extent to which parents' teaching of children become less directive as a function of children's age and communicative status and to describe relations between parents' interaction styles and children's verbal I.Q. One hundred and twenty families…

Found that increases in cognitive complexity and construct system abstractness significantly related to the use of (1) a greater number of persuasive strategies; (2) more listener-adaptive persuasive strategies; and (3) formation of more complex and abstract impressions of interaction partners. (PD)

This study examines the effects of sex, socioeconomic status, birth order and birth spacing on the cognitive performance of 12-week-old infants. A brief review of research on neonatal cognitive ability is followed by a description of the study itself. The subjects, 189 three-month-old Caucasian infants (61 first borns, 58 second borns, and 49…

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 quasi-experimental design including 83 variously treated and 55 untreated students indicated that the amount of between group IQ…