Identical twins raised separately and found to have similar IQ are cited as examples of the contribution made to intelligence by _____________?
Correct answer: B. heredity
- A. environment
- B. heredity
- C. infant stimulation
- D. parental interaction
Explanation
Similar IQs in identical twins raised in different homes suggest a substantial genetic contribution because their heredity is nearly identical while their environments differ. The finding does not mean environment has no influence.
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