If Differences Among People in Their IQ Scores Are Based

question 166

Multiple Choice

If differences among people in their IQ scores are based largely on differences in heredity, we should expect to find that

• A) the correlation in IQ scores should be higher for fraternal twins than for identical twins.
• B) the correlation in IQ scores should be higher for identical twins than for fraternal twins.
• C) children reared by their own parents should have higher IQs than do children reared by adoptive parents.
• D) children reared by adoptive parents should have higher IQs than do children reared by their own parents.

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