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Familial mental retardation


Familial patterns of mental retardation were examined among white and black children in the NINCDS Collaborative Perinatal Project population. Among whites, the mildly retarded children had more affected relatives than did the severely retarded, consistent with the traditional two-group theory of mental retardation. In blacks, where differences in family patterns between the mildly and the severely retarded were less clear, most retardation appeared to be of the cultural-familial type.

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  • Åkesson, H. O. (1961).Epidemiology and Genetics of Mental Deficiency in a Southern Swedish Population, Almquist and Wiksells, Uppsala.

    Google Scholar 

  • Broman, S. H., Nichols, P. L., and Kennedy, W. A. (1975).Preschool IQ: Prenatal and Early Developmental Correlates, Erlbaum, Hillsdale, N.J.

    Google Scholar 

  • Jensen, A. R. (1969). How much can we boost IQ and scholastic achievement?Harvard Educ. Rev. 39:1–123.

    Google Scholar 

  • Kamin, L. J. (1974).The Science and Politics of IQ, Erlbaum, Potomac, Md.

    Google Scholar 

  • Myrianthopoulos, N. C. (1970). An epidemiologic survey of twins in a large, prospectively studied population.Am. J. Hum. Genet. 22:611–629.

    PubMed  Google Scholar 

  • Myrianthopoulos, N. C., and French, K. S. (1968). An application of the U.S. Bureau of the Census socioeconomic index to a large, diversified patient population.Soc. Sci. Med. 2:283–299.

    PubMed  Google Scholar 

  • Penrose, L. S. (1939). Intelligence test scores of mentally defective patients and their relatives.Br. J. Psychol. 30:1–18.

    Google Scholar 

  • Roberts, J. A. F. (1940). Studies on a child population. V. The resemblance in intelligence between sibs.Ann. Eugen. Lond. 10:293–312.

    Google Scholar 

  • Roberts, J. A. F. (1952). The genetics of mental deficiency.Eugen. Rev. 44:71–83.

    Google Scholar 

  • Vandenberg, S. G. (1968). The nature and nurture of intelligence. In Glass, D. C. (ed.),Genetics, Rockefeller University Press and The Russell Sage Foundation, New York.

    Google Scholar 

  • Zigler, E. (1967). Familial mental retardation: A continuing dilemma.Science 155:292–298.

    PubMed  Google Scholar 

  • Zigler, E. (1978). National crisis in mental retardation research.Am. J. Ment. Def. 83:1–8.

    Google Scholar 

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Nichols, P.L. Familial mental retardation. Behav Genet 14, 161–170 (1984).

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