Many developmental theories have not been sufficiently evaluated using designs that control for unobserved familial confounds. Our long-term goal is to determine the causal structure underlying associations between early environmental conditions and later psychosocial and health outcomes. Our overall objective in this study was to further evaluate…

Existing research suggests that repeated bullying victimization is associated with lower levels of educational attainment. However, it is difficult to ascertain whether a true causal association exists since previously reported associations may be confounded by genetic and shared environmental factors that affect both repeated bullying…

Purpose: The present study had two purposes: provide an illustration of use of the National Longitudinal Survey of Youth 1979 Children's (CNLSY; U.S. Department of Labor, 2009) database and use the database to seek convergent evidence regarding the magnitude and significance of genetic effects influencing low and typical performers on measures of…

Although a negative relationship between fertility and education has been described consistently in most countries of the world, less is known about the relationship between intelligence and reproductive outcomes. Also the paths through which intelligence influences reproductive outcomes are uncertain. The present study uses the NLSY79 to analyze…

Used prospective data to examine the relationship between the family environment and child and adolescent achievement and to determine genetic and environmental contributions to this relationship. Data from 2,108 sibling full- and half-sibling pairs from the National Longitudinal Survey of Youth suggest that genetic factors explain about…

Uses data from the National Longitudinal Survey of Youth for 1,943 full siblings and 129 half-siblings to study genetic and shared environmental influences on IQ, education, and income. Results suggest that social inequality in the United States has its origins in genetically based traits and in different environmental backgrounds. (SLD)

An adaptation of the multiple regression approach of De Fries and Fulker (DF analysis) is used to account simultaneously for genetic and environmental influences on achievement. The model was fitted to achievement measures of 1,044 related pairs of children from the National Longitudinal Study of Youth (NLSY). (SLD)

Genetic and environmental influences on academic achievement were studied for 314 pairs of white full siblings and 53 pairs of half siblings and 161 pairs of black full siblings and 106 half-sibling pairs (National Longitudinal Survey of Youth). Results support a common heritage view of the growth of academic knowledge. (SLD)

Using prospective cohort data from the 1979 National Longitudinal Survey of Youth, this study examines the extent to which health insurance coverage and the source of that coverage affect adult health. While previous research has shown that privately insured nonelderly individuals enjoy better health outcomes than their uninsured counterparts, the…

The quality of the home environment, as a predictor, is related to health, education, and emotion outcomes. However, factors influencing the quality of the home environment, as an outcome, have been understudied--particularly how children construct their own environments. Further, most previous research on family processes and outcomes has…

The authors examined the developmental course of self-regulation in a cohort of children from the National Longitudinal Survey of Youth. The longitudinal sample included 646 children (48% girls; 52% boys; 36.2% Black, 23.4% Hispanic, 40.4% White) who were 4 to 5 years old in 1986 and who were followed up at ages 8 to 9 and ages 12 to 13. Levels of…

The importance of intelligence quotient (IQ) to income is analyzed using data from the National Longitudinal Survey of Youth, a study that began in 1979 with 12,686 subjects. Data for this study go through the 1994 interview wave, so that the most recent income data is for 1993. Statistical techniques are used to separate the influence of IQ from…

The strongest recent statement that inequality in America is the natural result of a free market came in "The Bell Curve: Intelligence and Class Structure in American Life" by Richard Herrnstein and Charles Murray. These authors argued that intelligence determines how well people do in life, and the rich are rich largely because they are…