Ksenia was separated from her biological parents at an early age. Her IQ scores are, nevertheless, very similar to those of her biological parents. This similarity probably reflects
A)hereditary influences on intelligence.
B)environmental influences on intelligence.
C)overall physical health.
D)none of these

Question

Quizplus · Accepted Answer

The fact that Ksenia's IQ scores are similar to those of her biological parents suggests that hereditary influences on intelligence play a significant role in determining intelligence. Environmental influences can also have an impact on intelligence, but the similarity of IQ scores in this case suggests that genetic factors may be more influential. Overall physical health may have some impact on intelligence, but it is unlikely to explain the specific similarity of IQ scores between Ksenia and her biological parents.

Ksenia Was Separated from Her Biological Parents at an Early