Infant intelligence from birth until the age of two was measured to determine the usefulness of infant intelligence tests. Twenty infants were tested regularly over the two-year period. Results showed neither simplex nor other long-term patterns of interrelationship among the infant intelligence scores obtained. The study concludes that the…

The Perry Preschool Project assessed longitudinal effects of a 2-year program consisting of a daily 3-hour cognitively oriented nursery, a weekly 90-minute home visit, and less frequent group meetings of the pupils' parents. Subjects consisted of 3- and 4-year-old Negro disadvantaged and functionally retarded children, whose pretest scores on the…