We evaluated over 200 participants semiannually from 12 to 48 months of age on measures of intellectual (Bayley Scales, Stanford-Binet Scale) and verbal (MacArthur-Bates Inventory, Peabody Picture Vocabulary Test) status. Structural equation modeling and hierarchical linear (growth curve) analyses were applied to address the nature of development…

Normal, first-born children of two-parent, self-supporting families (N=60) were divided into three groups at birth: control, mothers receiving a specific language stimulation program, and both parents receiving the program simultaneously. Infants whose parents received simultaneous training exhibited the greatest gain over 4 1/2 months in Bayley…

The primary purpose of this study was to compare the effectiveness of infant test scores, Home Observation for Measurement of the Environment (HOME) scores, socioeconomic factors and maternal IQ as predictors of children's mental test performance. Additional purposes were to (1) determine the extent to which socioeconomic factors and maternal…

The Infant Education Research Project was designed to facilitate the intellectual development of disadvantaged children through a program of home tutoring during the second and third years of life. An experimental group of 31 Negro male infants and a control group of 33 Negro male infants were selected from door-to-door surveys of two…

Infants judged to be at risk for subnormal intellectual growth were randomly assigned to experimental and control groups which varied as to educational curriculum activities. Two types of evidence, group differences and parent-child IQ correlations, demonstrate the importance of early environments in intellectual development. (Author/RD)