The Correlation in IQ Scores Between Identical Twins Reared Apart

question 91

Multiple Choice

The correlation in IQ scores between identical twins reared apart is lower than that between identical twins reared together. What does this suggest?

• A)Environmental factors can have an influence on intellectual development.
• B)Genetic factors have no impact on intellectual development.
• C)Environmental factors have no impact on intellectual development.
• D)Identical twins often do not have the same genotype.

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