For IQ Scores, the Correlation Between Monozygotic Twins Reared Apart

question 30

Multiple Choice

For IQ scores, the correlation between monozygotic twins reared apart is lower than that between monozygotic twins reared together.What does this difference indicate about the role of environmental and genetic factors in the development intellectual ability?

• A)Environmental factors have no impact.
• B)Genetic factors have no impact.
• C)Environmental factors have a greater influence than genetic factors.
• D)Both genetic and environmental factors contribute equally.

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