This study investigated whether children oversized at birth, like those undersized at birth, have an increased chance of mental subnormality. Subjects were 4-year-olds born of urban disadvantaged white mothers whose average education was 10.8 years. Stanford-Binet intelligence scores of the subjects were compared to their birth weights. Between…

This evaluation of cognitive change in Head Start children focused on changes in performance as opposed to changes in competence; specifically, that Binet test performance improves as a function of experience with Binet examiners. The study involved 93 children assigned to four groups who were tested for IQ gains during a 6-week Head Start program…

Thorndike's Stanford-Binet data suggest that from 1932 to 1971-72 preschool children enjoyed greater IQ gains than older children, possibly due to the rise of television. Additional analysis indicated that gains were either due to sampling error or totally antedated 1947. Gains of 12 IQ points were found for Americans. (Author/EGS)

In an effort to isolate the emergence and causes of social class differences in intellectual performance, this longitudinal study was undertaken as a follow-up on a cross-sectional study that yielded no social class differences on the Cattell Infant Intelligence Scale for 12-, 18-, and 24-month-old black children. In the present study, 89 children…

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)

THE EXPERIMENTAL GROUP IN THIS STUDY WAS 112 KINDERGARTEN CHILDREN FROM 11 HEAD START CENTERS. IN ORDER TO ASSESS THE VALUE OF THE HEAD START PROGRAM, THE MEASUREMENT OF THE EXPERIMENTAL GROUP TAKEN DURING THE FALL WAS COMPARED TO A MEASUREMENT OF NON-HEAD START KINDERGARTEN CHILDREN TESTED ABOUT THE SAME TIME. AT LEAST FOUR MONTHS AFTER THE…