Which is the best summary statement to characterize the heritability of intelligence?
A)Environmental factors only minimally affect intelligence.
B)Genetic factors only minimally affect intelligence.
C)Genetic factors account for about half of the variation in intelligence test scores among individuals.
D)Genetic factors account for about 90% of the variation in intelligence test scores among individuals.

Question

Quizplus · Accepted Answer

Studies have shown that genetic factors account for about 50% of the variation in intelligence test scores among individuals. This suggests that environmental factors also play a significant role in determining intelligence. Therefore, option C is the best summary statement to characterize the heritability of intelligence. Options A and B are too extreme and do not accurately represent the complex interaction between genes and environment. Option D overestimates the contribution of genetics and is not supported by scientific evidence.

Which Is the Best Summary Statement to Characterize the Heritability