Stephan was separated from his biological parents at an early age. His IQ scores are very similar to those of his adoptive parents. This similarity probably reflects
A)hereditary influences on intelligence.
B)environmental influences on intelligence.
C)both a & b.
D)none of these.

Question

Quizplus · Accepted Answer

Since Stephan was separated from his biological parents at an early age, this rules out hereditary influences on his intelligence. The similarity of his IQ scores with his adoptive parents suggests that environmental factors played a larger role in his intellectual development. Therefore, the correct answer is B, environmental influences on intelligence.

Stephan Was Separated from His Biological Parents at an Early