Barbara and Brenda are identical twins who were adopted at birth and raised by two different families.Andy and Andrew are identical twins raised together by their biological parents.When the four children entered high school they took an IQ test.Barbara and Andy each had scores of 110,while Brenda's IQ was measured at 120 and Andrew scored 108.These results support which of the following conclusions?

Question

Quizplus · Accepted Answer

The fact that identical twins raised in different environments (Barbara and Brenda) have different IQ scores suggests that environmental factors can influence intelligence. However, the fact that identical twins raised in the same environment (Andy and Andrew) also have different IQ scores suggests that genetics also play a role in determining intelligence. Therefore, the results support the conclusion that intelligence is shaped by both genetics and environmental influences.

Barbara and Brenda Are Identical Twins Who Were Adopted at Birth