If a pair of identical twins who were reared in the same environment take an IQ test, how much will their scores resemble one another?

A) They will be almost as similar as the scores of an individual who took the same test twice.
B) They will be as similar as the scores of any brother and sister.
C) They will be exactly the same.
D) They will be as similar as the scores of fraternal twins.

Question

Andrew Walker · Accepted Answer

Final Answer : A, Explanation :  Identical twins, especially when reared in the same environment, have very high IQ score correlations, often nearing the reliability of the test itself, which is similar to the consistency seen when an individual takes the same test twice.

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