Which research approach is probably the best for exploring the genetic contribution to personality?
A) comparing identical twins who were reared apart
B) comparing children adopted into another family with their siblings who remained with their birth parents
C) comparing fraternal twins
D) comparing identical twins who were raised in the same household
Answer: A
Rationale: Because identical twins raised in the same household share both genes and environment, studying twins reared apart is a more useful when trying to separate genetic and environmental contributions to personality.
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