Identical Twins Have IQ Correlations Around

question 47

Multiple Choice

Identical twins have IQ correlations around .7 to .8, whereas fraternal twins have IQ correlations of about .3 to .4. What do these correlations suggest?

• A)Identical twins have very similar IQs while fraternal twins do not.
• B)Both identical twins and fraternal twins have similar IQs.
• C)Fraternal twins have very similar IQs while identical twins do not.
• D)Neither identical twins nor fraternal twins have very similar IQs.

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