Which of the following individuals is likely to have an IQ that is most closely related to Darrell?
A)Darrell's neighbour Dave
B)Darrell's cousin Sarah
C)Darrell's sister Debra
D)Darrell's cousin Derreck

Question

Quizplus · Accepted Answer

Studies have shown that siblings tend to have similar IQ scores, as they typically share similar environmental and genetic factors. Therefore, it is most likely that Darrell's sister Debra would have an IQ that is most closely related to his own.

Which of the Following Individuals Is Likely to Have an IQ