Convolutions

... opposed conclusions of race differences in structural variables such as cortical thickness, size of frontal lobe, or complexity of the brain's convolutions. Rushton (1988a), however, countered that aggregating across studies typically cancels measurement error, at least nonsystematic measurement ...

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... (p. 7) reported a Black/White difference in brain weight of 100 grams and that he did not refute the data on racial admixture or on complexity of convolutions. J. S. Michael's (1988) revelation of Gould's mistreatment of Samuel George Morton's 19th century data has been described above. Nonetheless, ...

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