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    Development Through
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    Exam 9: Physical and Cognitive Development in Middle Childhood
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    On the Basis of Twin Studies and Other Kinship Evidence,researchers
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On the Basis of Twin Studies and Other Kinship Evidence,researchers

Question 13

Question 13

Multiple Choice

On the basis of twin studies and other kinship evidence,researchers estimate that about __________ of the differences in IQ among children can be traced to their genetic makeup.


A) a quarter
B) a third
C) half
D) two-thirds

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