Cohen, J., and Cohen, P. (1975).Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences, Lawrence Erlbaum, Hillsdale, N.J.
DeFries, J. C., Johnson, R. C., Kuse, A. R., McClearn, G. E., Polovina, J., Vandenberg, S. G., and Wilson, J. R. (1979). Familial resemblance for specific cognitive abilities.Behav. Genet. 9:23–43.
Falconer, D. S. (1981).Introduction to Quantitative Genetics, 2nd ed., Longman, London.
Horn, J. M., Loehlin, J. C., and Willerman, L. (1979). Intellectual resemblance among adoptive and biological relatives: The Texas Adoption Project.Behav. Genet. 9:177–207.
Horn, J. M., Loehlin, J. C., and Willerman, L. (1982). Aspects of the inheritance of intellectual abilities.Behav. Genet. 12: 479–516.
Johnson, R. C., DeFries, J. C., Wilson, J. R., McClearn, G. E., Vandenberg, S. G., Ashton, G. C., Mi, M. P., and Rashad, M. N. (1976). Assortative marriage for specific cognitive abilities in two ethnic groups.Hum. Biol. 48:343–352.
McAskie, M., and Clarke, A. M. (1976). Parent-offspring resemblance in intelligence: Theories and evidence.Br. J. Psychol. 67:243–273.
Reed, E. W., and Reed, S. C. (1965).Mental Retardation: A Family Study, Saunders, Philadelphia.
Reed, S. C., and Rich, S. S. (1982). Parent-offspring correlations and regressions for IQ.Behav. Genet. 12:535–542.
Roberts, J. A. F. (1952). The genetics of mental deficiency.Eugen. Rev. 44:71–83.
Wilson, J. R., DeFries, J. C., McClearn, G. E., Vandenberg, S. G., Johnson, R. C., and Rashad, M. N. (1975). Cognitive abilities: Use of family data as a control to assess sex and age differences in two ethnic groups.Int. J. Aging Hum. Dev.,6:261–276.