Concludes that if abilities are examined in terms of the experiences children undergo in any culture, it is apparent that there are few dumb children if they are classified from the perspective of the community of adaptation. (Author/AM)

A study of two separate models which implicitly explain the underachievement of Maori pupils indicates that there is a generalized (or generalizing) factor affecting the performance of Maori children as a whole despite environmental differences. These environmental differences have a relatively strong effect on Pakeha children. (Author/EB)

Wolff has recently reinterpreted the data of Lee to indicate that Black migration from the south to Philadelphia had been selective in an IQ-relevant manner. However, Wolff's deduction from Lee's data is shown to depend entirely upon an assumption about cumulative IQ deficit in southern Black children. (Author/CTM)

Kamin has contended that arguments presented in Wolff are too weak to justify selective migration. Although Kamin's critique points up the need for closer scrutiny of the cumulative-deficit phenomenon, it fails to refute Wolff's conclusion that selective migration is partly responsible for the North-South Black IQ differential. (Author/CTM)

Much research shows that the correlation between IQ and school performance is consistently high. However, some evidence indicates that this relationship is not consistent but is moderated by classroom psycho-social environment at the first-grade level. Data from IQ tests, the Devereux Elementary School Behavior Rating Scale, number of attendance…

Swedish longitudinal studies of twins support Scarr-Salapatek's explanation of nature-nurture influences on intelligence. This model predicts more genetic variance in test results for advantaged than disadvantaged groups. Jensen's work, however, suggests equal amounts of variance among different social classes. (Author/CP)