Two studies investigated how social class and race are associated with mathematical thinking. The first study compared poor Black preschoolers with a group of both Black and White middle-class children; the second study compared Black and White children of lower- and middle-class status. Children were drawn from both preschool and kindergarten…

Adoptive parents and their adoptive and natural children took IQ tests. Speed of solution correlated with verbal IQ and .51 with performance IQ among the parents. Mothers' speed correlated negligibly with scores of adoptive and natural children. Fathers' speed correlated more with their natural than adopted children's performance scores.…

Sex, body size, several sociocultural variables, and status rank were measured in mixed-sex small groups. The intervening sociocultural variables explained some but not all of the interrelationships. Results underscore the empirical vulnerability of social-psychological explanations of sex-role behavior and signal the need for further research.…

Swedish longitudinal studies of twins support Scarr-Salapatek's explanation of nature-nurture influences on intelligence. This model predicts more genetic variance in test results for advantaged than disadvantaged groups. Jensen's work, however, suggests equal amounts of variance among different social classes. (Author/CP)

This article summarizes the thesis of "The Bell Curve: Intelligence and Class Structure in American Life," noting its rejection of educational intervention to solve social problems correlated to low IQ. It critiques the book for its failure to consider important research findings, and addresses the race issue, urging that the book's…

Preliminary results from data on 146 Australian, 284 American, and 70 Norwegian preschool twins indicate reliable genetic influences on phonological awareness and memory and learning. Vocabulary, grammar, and morphology showed significant shared environment and negligible genetic effects. A print knowledge composite showed genetic and shared…

Genetic involvement in specific verbal and spatial abilities and memory and perceptual speed was assessed using 163 adopted and 142 non-adopted 7-year-olds and their biological, adoptive, and non-adoptive parents. Results imply the existence of some genetic continuity from the early school years to adulthood for verbal and spatial abilities. (TJH)

Our culture's preoccupation with gender differences is reflected in the importance developmental psychologists have placed on gender-related issues. Discusses the following areas of research where gender has been a primary focus: (1) measurement of intellectual abilities; (2) biology and behavior; and (3) socialization processes. Discusses policy…

This paper offers a model of the nature and development of talents, which views genetic factors as determining potential strengths and setting limits and views abilities, aptitudes, and intelligences emerging as a result of experiences, motivations, and styles. Specific talents are characterized by precocity, creative insight, a functional…

Data from Colorado Adoption Project were used to examine hypothesis that association between parental divorce and children's adjustment is mediated by genetic factors. Findings for psychopathology were consistent with an environmentally mediated explanation for the association. Findings for achievement and social adjustment were consistent with a…

Examined environmental and gene-environment processes linking parenting (affect, control, responsiveness) and preschoolers' behavioral adjustment difficulties (noncompliance, conduct problems). Found that estimates of shared environmental variance and mediation were greatest for observational data, and estimates of child genetic variance and…

Intelligence tests were administered twice to 426 members of 93 transracial adoptive families, once when the adopted children's ages averaged 7 years and again when they averaged 17 years. Correlations suggest that influences on intellectual development in this sample of black and interracial adoptees reared in white families are similar to those…

Using data from the same source as that employed in Herrnstein and Murray's book, "The Bell Curve," this study reexamined links between the test scores of mothers and children, paying close attention to what the scores measure and whether these measurements mean the same things for blacks and whites. The study replicated Herrnstein and…

The American environment is a culturally splintered and future-related society, representative of the freedoms, stresses, and acute needs created by a modern life style. The contemporary Native American renaissance in America is a direct response to the technological urban lifestyle that dominates the quality of American life. This resurgence is…

The controversies surrounding the use of intelligence quotient (IQ) tests with children are summarized. This article discusses what intelligence is and how intelligence is measured. It also examines factors which can affect measurement, including examiner training or bias, examinee age, misinterpretation of test scores, and poor tests. The…