Research involving family and adoption studies have demonstrated that
A)siblings reared together and cousins reared together have similar IQ correlations.
B)the correlations between the IQ scores of cousins reared together are very strong.
C)the correlations between the IQ scores of cousins reared together are negative.
D)the higher the percentage of shared genes between people,the higher their IQ correlations will be.

Question

Quizplus · Accepted Answer

Family and adoption studies have shown that genetic factors play a significant role in intelligence, with closer genetic relationships (such as siblings) showing higher IQ correlations compared to more distant relationships (such as cousins).

Research Involving Family and Adoption Studies Have Demonstrated That