Cranial capacities are calculated from external head measurements reported for 40 samples (tens of thousands of subjects) from a 1990 review of ergonomically important body measurements compiled by the International Labour Office. The correlation between brain size and intelligence for groups and individuals is discussed. (SLD)

A case study is presented of a boy with partial tetrasomy 15, severe mental retardation, and autism, from age 6 to 9. The case is analyzed in relation to other cases with an extra marker chromosome 15 and the mechanisms that underlie the association between autism and marker chromosome 15. (JDD)

The 1994 publication of "The Bell Curve" by R. Herrnstein and C. Murray is compared to other examples of eugenic principles, including the sterilization of "feebleminded" Carrie Buck, family degeneracy studies focusing on lower class Caucasian families, and other works that view the poorest and least educated members of society…

The genetic and environmental causes of the phenotypic association between reading and verbal short-term memory (VSTM) were analyzed using data from the Colorado Reading Project for 446 twin pairs. Results of bivariate behavioral genetic analyses indicate that both reading ability and VSTM are highly heritable. (SLD)

This paper comments on the incidence of adopted children exhibiting emotional disturbances and their resulting overrepresentation in special education programs. It is felt that the independence demanded of the adolescent and the lack of genetic expectancy trigger the awakening of psychological insecurities in the adopted child. (JDD)

This issue's special section on canalization of behavioral development is introduced. In the special section, an invited paper by Gilbert Gottlieb, adopts a systems approach that stresses the complex interaction of genes, behavior, and environment. Several comments on the Gottlieb paper are also included. (BC)

A real world sample of actual data that students can use to see the application of the Hardy-Weinberg law to a real population is provided. The directions for using a six-step algorithmic procedure to determine Hardy-Weinberg percentages on the data given are described. (KR)

The body of data indicating sex differences in the brains of almost every mammalian family examined so far (rodents, birds, monkeys, and human beings) is reviewed. The differences in the hypothalamus, thalamus, corpus callosum, anterior commissure, and the hippocampus are described. (KR)

The activity level of 60 pairs of infant twins was measured for 2 days. Differences in activity level for monozygotic and dizygotic twins, as indicated by motion recorders and parent ratings, showed evidence of genetic influences. (BC)

Rebuts the Burgess and Molenaar commentary in this issue on the authors' paper concerning sociobiology and human development, maintaining that genes (nature) cannot usefully be construed as independent of the coactional developmental system of which they are a part. (BB)

Presents an interview with Walbot who has done genetic research using corn plants. (PR)

Changes in grade 10 students' (n=79) conceptions of genes during genetics instruction was studied from multiple perspectives. Ontologically, most students moved from passive to active models of genes. Affectively, students were interested in genetics but unmotivated by microscopic mechanistic explanations; however, teaching approaches were…

The controversy about the relative importance of heredity and environment and the role of parents in children's behavior explored by Harris is not new. Although her book offers no new policy guidance, it does offer some useful academic suggestions by clarifying the plentiful scientific evidence of the importance of genetics in behavior. (SLD)

Reviews the impact of eugenics on people with disabilities and the danger that they will be further devalued in a world of increasing genetic manipulation. Margaret Mead's concept of providing opportunities for all people to learn how to participate wholly in society and the need for an ethical revolution are discussed. (CR)

Describes seven myths regarding the role of genes in determining behavior and the modifiability of behavior that permeate the thinking of many educators and psychologists. Examines each myth, dispels it, and states what are believed to be correct conclusions from different kinds of behavior-genetic and related data, considering the implications…