Comments on the work of Arthur Jensen, specifically "The g Factor" (1998), which consolidates the psychometric, neurophysiological, behavior genetic, and comparative evidence for the existence and importance of a factor of general intelligence ("g"). Discusses Jensen's work on black/white differences in intelligence. (SLD)

Discusses the contributions of Arthur Jensen to the study of intelligence and considers his writings on the topic of racial differences in scores on tests of intelligence. Concludes with a discussion of his work on the correlates of the "g" vector (general intelligence factor). (Author/SLD)

Examines current views in Great Britain on the genetic basis of violence and crime. Argues that evolutionary heretics have a flawed understanding of genetics and defend an anti-scientific concept of free will. Maintains that arguments within Darwinism have allowed evolutionary heretics to promote their own agenda and to continue to abuse the most…

Describes the IQ Quantitative Trait Loci (QTL) project, an attempt to identify genes underlying IQ score variations using maps from the Human Genome Project. The essay argues against funding the IQ QTL project because it will end the debates about the genetic basis of intelligence and may lead directly to eugenic programs of genetic testing. (SLD)

Argues that there is a wealth of little known but rapidly growing evidence that contradicts the assumptions and claims of genetic determinism. Recent research showing the impacts of child maltreatment and environmental pollutants suggest interventions that might alleviate the problems sometimes attributed to genetic deficiencies. (SLD)

Used the sibling adoption design to investigate teacher and tester ratings of child temperament. Ratings on the Colorado Childhood Temperament Inventory were obtained from a teacher and a tester for pairs of adopted and nonadoptive seven-year-old siblings. Significant genetic influence emerged for tester ratings of Activity and Sociability and for…

This study examined passive genotype-environment correlations (GECs) for language related abilities by comparing environment-child language associations in adoptive and nonadoptive families. Findings indicate genetic mediation of the association between home environmental variables with children's language-related abilities. Implications for…

Discusses a publication entitled "Sociobiology" which contends that man's behavior is genetically determined, and the controversy surrounding this book. (MLH)

Reviews current research on a woman's chances of bearing twins and the genetic relationship, prenatal competition, and personality similarities between twins. In addition, the nature/nurture controversy is discussed in terms of evidence from studies of identical twins reared apart. Future studies are suggested to discover the ways twinning might…

Because many people still believe that specific, identifiable genes dictate the level of human intelligence and that the number/quality of these genes can be evaluated, presents evidence from human genetics (related to nervous system development) to counter this view. Also disputes erroneous assumptions made in "heritability studies" of human…

Genetic research on intelligence has moved beyond the nature-nurture controversy to investigate developmental change and continuity, associations among cognitive abilities, and the developmental interface between nature and nurture. Advances in molecular genetics are leading to a new era of research. (Author/SLD)

Summarizes the positions of leading proponents of the belief in the biological basis of differences in intelligence, reviewing the ideas of Arthur Jensen, J. Phillipe Rushton, and the currently controversial "The Bell Curve" by Charles Murray and Richard Herrnstein. Relations between social perceptions of race and class are discussed.…

Studied continuity and change in general cognitive ability from infancy to adolescence in adoptees (107 children), biological siblings (87 pairs), and twins (224 monozygotic and 189 dyzygotic pairs). Findings generally support previous findings about genetic and environmental factors, with the exception that in the transition to adolescence,…

Pairs of genetically unrelated children reared as same-age siblings offer a design for investigating genetic and environmental influences on behavior. Results with 21 pairs support an explanatory model of intelligence that includes genetic factors. Shared environment appeared to have a very small effect on intellectual development. (SLD)

Uses inexpensive equipment to demonstrate, through factorial design, an interaction between genetics and environment. Provides instructions for introducing and conducting the experiment, reporting that significant results are usually obtained. Notes the exercise is appropriate for experimental psychology, developmental psychology, behavior…