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Race, IQ, and the Search for Statistical Signals Associated with So-Called “X”-Factors: Environments, Racism, and the “Hereditarian Hypothesis”

ScholarsArchive at Oregon State University

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Title Race, IQ, and the Search for Statistical Signals Associated with So-Called “X”-Factors: Environments, Racism, and the “Hereditarian Hypothesis”
Names Kaplan, Jonathan Michael (creator)
Date Issued 2015-01 (iso8601)
Note This is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by Springer and can be found at: http://link.springer.com/journal/10539
Abstract Some authors defending the "hereditarian" hypothesis with respect to differences in average IQ scores between populations have argued that the sorts of environmental variation hypothesized by some researchers rejecting the hereditarian position should leave discoverable statistical traces, namely changes in the overall variance of scores or in variance-covariance relating scores to other variables. In this paper, I argue that the claims regarding the discoverability of such statistical signals are broadly mistaken - there is no good reason to suspect that the hypothesized environmental causes would leave detectable traces of the sorts suggested. As there remains no way to gather evidence that would permit the direct refutation of the environmental hypotheses, and no direct evidence for the hereditarian position, it remains the case, I argue, that the hereditarian position is unsupported by current evidence.
Genre Article
Topic Race
Identifier Kaplan, J. M. (2015). Race, IQ, and the search for statistical signals associated with so-called “X”-factors: environments, racism, and the “hereditarian hypothesis”. Biology & Philosophy, 30(1), 1-17. doi:10.1007/s10539-014-9428-0

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