Familial studies of intelligence: a review

Science  29 May 1981:
Vol. 212, Issue 4498, pp. 1055-1059
DOI: 10.1126/science.7195071


A summary of 111 studies identified in a survey of the world literature on familial resemblances in measured intelligence reveals a profile of average correlations consistent with a polygenic mode of inheritance. There is, however, a marked degree of heterogeneity of the correlations within familial groupings, which is not moderated by sex of familial pairing or by type of intelligence test used.

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