Critically examines the portions of Arthur Jensen's books that concern Barbara Burks' 1928 study of adoptive families. Findings are that Burks' sample was highly selective, that her environmental measures were limited, and that Jensen has misrepresented the content and implications of her study. It is also shown that Jensen's estimates of…

Presents a brief, quick-reference check list of methodological errors, fallacies, mistakes, and instances of out-and-out trickery that are found in recent well-known studies of IQ, IQ heritability, and race differences, focusing primarily upon the works of psychologist Jensen, Herrnstein, Eysenck, including selected works of William Shockley and…

The concern of this investigation lies with the development and estimation of models explaining children's intellectual variability. Specifically, attention is directed to: (a) the role of parental status attainments and family environments in the transmission of intellectual advantage-disadvantage across generations; (b) the possibility that…

It has been said that the heritability of learning ability or of intelligence is irrelevant to teachability. In support of this statement we see it pointed out that a child or a group of children show some response to training, and this is held up as evidence against the heritability of intelligence or learning ability. Most estimates of the…

This book is considered to provide a sober, balanced, and scholarly examination of the evidence that bears on the role of genetic and environmental factors in the determination of group differences in ability in the United States. The first chapter provides something of the background and recent history of the concern with racial-ethnic…