Describes an exercise in biometrical genetics based on the noninteractive use of a computer simulation of a wheat hydridization program. Advantages of using the material in this way are also discussed. (Author/JN)

Primary prevention, as applied to the children of psychotics, should be directed against the transmission of psychosis to the next generation of adults and toward the relief of psychopathology in the children. It should be remembered that genetic and environmental factors interact in the etiology of mental illness. (Author/CMG)

Discusses the sampling and data-collection techniques used to study the heights, intelligence levels, and aggression levels of XYY and XXY males. (MLH)

Attempts to emphasize some of the rather precise analytic and predictive values of evolutionary theory, applied to parental behavior. (Author/RK)

The response that this generation and the next generation gives to that most basic question of all, "What is man?," was the focus of this article. It attempted to make us aware of and informed of the topic. (Author/RK)

Presented is a case study of a family in which a pair of twins have epiloia (characterized by epilepsy, abnormal skin pigmentation, and severe mental retardation). (DB)

Retinitis Pigmentosa includes a number of inherited diseases which usually result in blindness. The disease is progressive in nature and begins with the deterioration of cells in the eye responsible for peripheral vision. As the condition worsens there is a gradual loss of peripheral vision and night blindness. Proper educational planning requires…

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)