An educational psychologist who found his name linked by rhetoric to racism tries again to make clear what he believes and does not believe. (Editor)

A geneticist discusses the heritability of intelligence and points out the pitcalls that lie in the path of those who try to estimate the heritability of IQ differences. (Editor)

Analysis of venous blood samples from 24 mothers of G1-trisomy-affected (Down's Syndrome) children and 23 mothers of chromosomally normal children indicated that mothers of G1-trisomy-affected children had a greater than expected involvement of the G-chromosomes in associations of acrocentric satellited (chromosome configuration) chromosomes.…

Issues surrounding the degree of genetic or environmental control of intelligence are discussed in relation to existing IQ tests. (KM)

Presents a brief review of modern techniques developed for genetic manipulation. Special attention is given to implications of future applications of these techniques for human beings. (PS)

Describes sequence of activities for teaching three-point linkage concept and gene-mapping to high school biology students. Includes laboratory experiments and hypothetical examples for classroom discussion. (PS)

An analysis, supported by recently published data, which suggests that IQ differences between groups may be explained by environmental factors. (Author/FF)

This analysis of manual asymmetry suggests that there are two main features to be explained: first, the normal bell-shaped distribution of relative skill, and secondly, the shift of the distributions toward the right. (Author)

The theory of X-linkage of major intellectual traits was hypothesized to explain the substantially greater numbers of males with mental retardation and learning disorders. (Author/CB)

Discusses the interaction of biological knowledge and human values, emphasizing problems raised by man's ability to control human evolution. Analyzes moral and religious concerns about eugenic artificial insemination or nuclear transplantation, including implications for the structure of the family and the basis of parenthood. (EB)