117) Pinel ended his discussion of the genetics of human psychological differences with a description of
the study of Turkheimer and colleagues (2003). The important finding of this study was that
A) among the very poor, the heritability estimate of IQ was close to zero.
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B) among the affluent, the heritability estimate of IQ was close to one.
C) IQ in adult humans is almost entirely genetic.
D) both A and B
E) both B and C
Answer: D
Diff: 3 Page Ref: 48
Topic: 2.5 Genetics of Human Psychological Differences
Type: (Conceptual)
Rationale: The key concept here is that experience can have a huge effect on heritability estimates, which
are often assumed to be fixed for each trait.
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