Twin Studies Have Found That Some Psychological Traits,such as Intelligence,have

question 170

Multiple Choice

Twin studies have found that some psychological traits,such as intelligence,have a notable genetic contribution.This can be concluded from what evidence?

• A) the similarity of identical twins is greater when they are reared apart than when they are reared together.
• B) the similarity of fraternal twins raised together is greater than the similarity of identical twins raised apart.
• C) the similarity of identical twins raised apart is greater than the similarity of fraternal twins raised apart.
• D) the similarity of identical twins is essentially equal to that of fraternal twins.

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