The Fact That IQ Correlations Increase with Age for Identical

question 113

Multiple Choice

The fact that IQ correlations increase with age for identical twins, but decrease with age for fraternal twins, suggests that

• A) the genetic likeness of identical twins causes them to seek out similar niches in adolescence and adulthood.
• B) the influence of rearing conditions on IQ is stronger for identical twins than fraternal twins.
• C) rearing experiences play a larger role early in life, whereas genetic influences play a larger role later in life.
• D) the contribution of heredity to IQ decreases with age.

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