Critics have pointed to several weaknesses in the research used to make a case for the role of genetics on personality development. Their criticisms include each of the following points except one. Which one?
A. Dizygotic twins may share an environment more alike than the environment shared by monozygotic twins.
B. Families who adopt children are different from those who do not adopt.
C. Parents may treat adopted children differently than they treat biological children.
D. Parents of dizygotic twins may look for and emphasize the differences between the twins more than parents of monozygotic twins.
Question 2
Which of the following kinds of data provides the weakest scientific evidence for a genetic influence on personality?
A. Twin-study data
B. Similarity between personalities of parents and children raised by their parents
C. Adoption studies data
D. Comparing personalities of twins separated at birth
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