This book provides an interdisciplinary look at racism and science, investigating the biological and social realities of individual and group differences. The contributors examine race and racial distinctions, environmental versus genetic contributions to IQ and to cognitive skill level, the impact of biocultural interactions on behavior, and the problems of achieving an objective appraisal of inter- and intragroup differences in humans. They also consider a possible model for cultural and biological evolution, recommending a careful selection of models and methods of approach for sciences concerned with the study of man. The book includes recent findings in the area of race and IQ, documents instances of racism and classism, and analyzes factors underlying these phenomena.