Biology and Philosophy 30 (1):1-17 (2015)

Jonathan Kaplan
Oregon State University
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 matrices 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
Keywords Race  IQ  Intelligence  Hereditarian  Environmental  Variance  Statistical signals
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DOI 10.1007/s10539-014-9428-0
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References found in this work BETA

Race: A Social Destruction of a Biological Concept.Neven Sesardic - 2010 - Biology and Philosophy 25 (2):143-162.
Making Sense of Heritability.Neven Sesardic - 2005 - Cambridge University Press.
Making Sense of Heritability. [REVIEW]Neven Sesardic - 2007 - British Journal for the Philosophy of Science 58 (3):619-623.

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