Studies of identical twins have

A. been based on extremely small samples and should be viewed as preliminary analyses at best.
B. proved conclusively the importance of biological factors in human development.
C. proved conclusively the importance of environmental factors in human development.
D. proved conclusively that human development is a result of the interaction between environmental and biological factors.


Answer: A

Sociology

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Sociology

Assume that a particular federal program

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Sociology

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Sociology

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Sociology