Evidence indicating that urbringing affects one's mental ability is provided by which of the following findings?
Correct answer: C. Siblings reared together are more similar in IQ than sibling reared apart.
- A. Identical twins are more similar in IQ than fraternal twins
- B. There is more than a chance similarity between adopted children and their biological parents.
- C. Siblings reared together are more similar in IQ than sibling reared apart.
- D. Identical twins reared apart are more similar Iq siblings reared together.
Explanation
Greater IQ similarity among siblings raised together than among those raised apart suggests that shared upbringing contributes to mental ability. Similarity between identical twins or biological relatives mainly supports genetic influence.
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