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Title: Implications of the Secular Rise in IQ for Convergence of Black and White IQ Scores (Also titled: The Secular Increase in IQ and Longitudinal Changes in the Magnitude of the Black-White Difference: Evidence from the NLSY)
Resulting in 1 citation.
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Murray, Charles A. |
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Implications of the Secular Rise in IQ for Convergence of Black and White IQ Scores (Also titled: The Secular Increase in IQ and Longitudinal Changes in the Magnitude of the Black-White Difference: Evidence from the NLSY) Presented: Vancouver, BC, Behavior Genetics Association 29th Annual Meeting, July 4, 1999 Cohort(s): Children of the NLSY79, NLSY79 Publisher: Behavior Genetics Association Keyword(s): Family Influences; Genetics; Intelligence; Intelligence Tests; Intergenerational Patterns/Transmission; Peabody Picture Vocabulary Test (PPVT); Racial Differences; Siblings Permission to reprint the abstract has not been received from the publisher. The secular and international rise in IQ has been widely interpreted as evidence that black and white IQ scores may be expected to converge over time. The present study first examines the logic behind this position, then explores the consistency of that logic with data from the National Longitudinal Study of Youth (NLSY), a large national sample that has been followed since 1979. Elaborating Jensen's procedure (A.R. Jensen, 1973, Educability and Group Differences, Methuen), the analyses focus on sibling pairs and mother-offspring pairs within the NLSY. For the sibling analysis, a sample of blacks and whites are matched on IQ and on parental education, occupation, and income. For the mother-offspring analysis, a sample of black and white mothers are matched on IQ and their own education and family income. Parallel analyses of the IQs of the comparison siblings and of the offspring are conducted. Despite equivalent means and variance on IQ and the socioeconomic variables in the black and white reference samples, the IQs of the comparison siblings and of the offspring regressed to means with a black/white difference of 16.9 IQ points (sibling sample) and 21.6 IQ points (mother-offspring sample). Alternative possibilities for reconciling these findings with the secular rise in IQ are discussed. |
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Bibliography Citation
Murray, Charles A. "Implications of the Secular Rise in IQ for Convergence of Black and White IQ Scores (Also titled: The Secular Increase in IQ and Longitudinal Changes in the Magnitude of the Black-White Difference: Evidence from the NLSY)." Presented: Vancouver, BC, Behavior Genetics Association 29th Annual Meeting, July 4, 1999. |