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Resumo

Franz Boas's study of the changes in bodily form of descendants of immigrants has stood for over ninety years as proof of environmental influences on cranial form. Recent reanalysis of his data have shown differing interpretations of the importance of his findings. Here, we explore the historical, political, and social setting of the study that could have led Boas to overstate the importance of his findings. We also include a discussion of the issue at large with respect to the study of modern and prehistoric human variation. Given the current state of population research using craniometric data we conclude, as many of Boas's early criticism have, that while some of the changes observed by Boas have statistical credibility, they generally lack biological meaning when considered in the scope of the degree of modern human variation. [Keywords: plasticity, immigration, craniometries, cranial index, human variation]

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