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IQ, Birth Weight, and Number of Sexual Partners in White, African American, and Mixed Race Adolescents

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Abstract

Mean levels of three characteristics—verbal IQ, number of sexual partners, and birth weight—were examined in African American, White (European-descent) Americans, and Black/White mixed race American adolescents. The sample came from Wave 1 of the National Longitudinal Study of Adolescent Health. The mean age was 16 years. According to their interviewers, the mixed race children had an African American physical appearance. The African American adolescents had a lower birth weight, a lower verbal IQ, and a higher number of sexual partners than did White adolescents. For each characteristic, the mixed race mean fell between the means of the two parental populations. Design extensions were proposed that include: (1) directly genotyping for individual racial admixture, (2) including parents of the mixed race children, and (3) including their cousins.

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REFERENCES

  • Bouchard, T. J., Jr., & Loehlin, J. C. (2001). Genes, evolution, and personality. Behavior Genetics, 31, 243–273.

    Google Scholar 

  • Brooks-Gunn, J., Klebanov, P. K., & Duncan, G. J. (1996). Ethnic differences in children's intelligence test scores: Role of economic deprivation, home environment, and maternal characteristics. Child Development, 67, 396–408.

    Google Scholar 

  • Collins, J. W., Jr., David, R. J., Symons, R., Handler, A., Wall, S. N., & Dywer, L. (2000). Lowincome African-American mothers' perception of exposure to racial discrimination and infant low birth weight. Epidemiology, 11, 337–339.

    Google Scholar 

  • Cramer, J. C. (1995). Racial and ethnic differences in birth weight: The role of income and financial assistance. Demography, 32, 231–247.

    Google Scholar 

  • Hocher, B., Slowinski, T., Stolze, T., Pleschka, A., Neumayer, H., & Halle, H. (2000). Association of maternal G protein beta3 subunit 825T allele with low birth weight. Lancet, 355, 1241–1242.

    Google Scholar 

  • Jencks, C., & Phillips, M. (Eds.). (1998). The Black-White test score gap. Washington, D.C.: Brookings Institution Press.

    Google Scholar 

  • Krieger, N., Sidney, S. & Coakley, E. (1998) Racial discrimination and skin color in the CARDIA study: Implications for public health research. American Journal of Public Health, 83, 1308–1313.

    Google Scholar 

  • Murray, C. (1998). Income inequality and IQ.Washington, D.C.: AEI Press.

    Google Scholar 

  • Parra, E. J., Marcini, A., Akey, J., Martinson, J., Batzer, M. A., Cooper, R., Forrester, T., Allison, D. B., Deka, R., Ferrell, R. E., & Shriver, M. D. (1998). Estimating African American admixture proportions by use of population specific alleles. American Journal of Human Genetics, 63, 1839–1851.

    Google Scholar 

  • Plomin, R., DeFries, J. C., McClearn, G. E., & McGuffin, P. (2000). Behavioral genetics (4th Ed.). New York: Worth Publishers.

    Google Scholar 

  • Plomin, R., & Perill, S. A. (1997). Genetics and intelligence: What's new. Intelligence, 24, 53–77.

    Google Scholar 

  • Rowe, D. C., Jacobson, K. C., & Van den Oord, E. J. C. G. (1999). Genetic and environmental influences on vocabulary IQ: Parental education level as moderator. Child Development, 70, 1151–1162.

    Google Scholar 

  • Rowe, D. C., Vazsonyi, A. T., & Flannery, D. J. (1994). No more than skin deep: Ethnic and racial similarity in developmental process. Psychological Review, 101, 396–413.

    Google Scholar 

  • Rushton, J. P. (2000). Race, evolution, and behavior: A life history perspective (3rd Ed.). Port Huron, MI: The Charles Darwin Research Institute.

    Google Scholar 

  • Steele, C. M., & Aronson, J. (1995). Stereotype threat and the intellectual test performance of African Americans. Journal of Personality and Social Psychology, 69, 797–811.

    Google Scholar 

  • Udry, J. R., & Bearman, P. S. (1998). New methods for new research on adolescent sexual behavior. In R. Jessor (Ed.), New perspectives on adolescent risk behavior (pp. 241–269). New York: Cambridge University Press.

    Google Scholar 

  • Van den Oord, E. J. C. G., & Rowe, D. C. (2000). Ethnic differences in birth health risk: A quantitative genetic approach. Demography, 37, 285–298.

    Google Scholar 

  • Van den Oord, E. J. C. G. & Rowe, D. C. (2001). A step in another direction: Looking for maternal genetic and environmental effects on racial differences in birth weight. Demography, 38, 573–576.

    Google Scholar 

  • Van den Oord, E. J. C. G., & Rowe, D. C. (2002). The GNB3 gene and ethnic differences in birth weight. Submitted for publication.

  • Waller, J. H. (1971). Achievement and social mobility: Relationship among IQ scores, education, and occupation in two generations. Social Biology, 18, 252–259.

    Google Scholar 

  • Williams, R. C., Long, J. C., Hanson, R. L., Sievers, M. L., & Knowler, W. C. (2000). Individual estimates of European genetic admixture associated with lower body-mass index, plasma glucose, and prevalence of Type 2 diabetes in Pima Indians. American Journal of Human Genetics, 66, 527–538.

    Google Scholar 

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Rowe, D.C. IQ, Birth Weight, and Number of Sexual Partners in White, African American, and Mixed Race Adolescents. Population and Environment 23, 513–524 (2002). https://doi.org/10.1023/A:1016313718644

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  • DOI: https://doi.org/10.1023/A:1016313718644

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