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How heritability misleads about race

N Block1

  • 1Department of Linguistics and Philosophy, Massachusetts Institute of Technology, Cambridge 02139-4307, USA.

Cognition
|August 1, 1995
PubMed
Summary

The Bell Curve

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Area of Science:

  • Behavioral Genetics
  • Psychometrics
  • Race and Genetics

Background:

  • The Bell Curve argues that IQ heritability in white populations implies genetic inferiority in Black populations.
  • This argument, originally proposed by Jensen, links heritability estimates to racial group differences.

Purpose of the Study:

  • To critically evaluate the reasoning presented in The Bell Curve regarding IQ, heritability, and race.
  • To clarify the concept of heritability and its limitations in interpreting group differences.

Main Methods:

  • Conceptual analysis of the heritability of intelligence quotient (IQ).
  • Examination of the logical fallacies in applying heritability to racial comparisons.

Main Results:

  • The study demonstrates that the reasoning used in The Bell Curve is fallacious.
  • Heritability is shown to be a misleading measure when applied to inter-group comparisons, particularly concerning race.

Conclusions:

  • The heritability of IQ does not support claims of genetic inferiority of any racial group.
  • Heritability is an inappropriate and uninformative metric for understanding race and IQ differences.

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