Discussion
Which set of three approaches is more relevant to study the impact of Genetic factors on intelligence ?
1. Correlation between siblings
2. Correlation between identical twins reared apart.
3. Adopted child studies.
4. Correlation between parents and children.
Codes :
Answer: C
The key gives 1, 2 and 4: correlation between siblings, correlation between identical twins reared apart, and correlation between parents and children. These are the approaches that bear on the impact of genetic factors on intelligence, since higher correlations between people who share more genes point to a genetic influence.
Adopted child studies are also an approach of this kind, but the key does not include them in the set of three. The answer follows the official key.
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