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A Large Study of MZ and DZ Twin Pairs Across

Question 126

Multiple Choice

A large study of MZ and DZ twin pairs across multiple countries found that the correlations in IQ between co-twins _____ with age for DZ twins and _____ with age for MZ twins.


A) decreased; increased
B) increased; decreased
C) increased; stayed the same
D) decreased; stayed the same

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