Posits that an evolutionary perspective can unite the study of the typical development for and individual variation within a species and that environments within the normal range for a species are required for species-normal development. Individual differences in children reared in normal environments arise primarily from genetic variation and…

Focuses on the integrity and ethics of Arthur Jensen, while tracing the negative reactions his work on genetic differences in intelligence has evoked. Outlines some other areas in which Jensen has worked and commends his emphasis on honest psychological science. (SLD)

Although there continues to be controversy about the magnitude of genetic and environmental effects on human behavior, it is generally agreed by various scientific fields that individual differences in brain function and behavior must follow the same laws of variability as other human characteristics. Whether or not racial and ethnic group…

Discusses issues considered in the book "The Bell Curve: Intelligence and Class Structure in American Life" (Richard Herrnstein, Charles Murray), which stresses the importance of genetic differences between individuals and groups. The concept of a cognitive elite, cognitive classes and social behavior, ethnic differences in cognitive…

A reply to Plomin's critique and some criticisms of Munsinger's review of adopted child literature are presented. Selective bias in adoptee samples, implicit assumptions in models that lead to heritability estimates, and problems produced by lack of an accepted model of environmental transmission are also discussed. (Author/RD)