What empirical finding supports the conclusion that home environment shapes cognitive capabilities?
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Answer: C. Siblings reared together are more similar in IQ than sibling reared apart.
Explanation
Comparing siblings reared together with those apart isolates the powerful effect of shared home environments. Greater similarity among siblings in the same household directly points to environmental influences on IQ. The other twin or sibling comparisons primarily test genetic heritability rather than household environmental impact. Behavioral genetics utilizes adoption and twin studies to parse out environmental versus genetic variances. Shared environment encompasses family socioeconomic status, parental involvement, and available learning resources at home. Family studies provide robust data regarding how childhood surroundings shape long-term cognitive development trajectories.
Social scientists use these empirical findings to design effective early childhood educational intervention programs. Understanding home environmental impacts helps policymakers allocate funding for impoverished neighborhoods and schools. Parents strive to create enriching home environments to maximize their children's cognitive potential. Option A primarily demonstrates the strong genetic component of intelligence through identical twins. Option B shows biological parent-child correlations which emphasize hereditary factors over home environments. Option D compares identical twins apart to typical siblings to highlight genetic rather than environmental variance.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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