Adoption studies of intelligence indicate that
A) environment is a very small factor.
B) environment is more important than heredity.
C) environment has some impact, but less so than heredity.
D) genetic influence is very slight.

Question

Quizplus · Accepted Answer

Adoption studies have consistently shown that both genetics and environment play a role in intelligence, but genetics appears to have a stronger influence. However, this does not mean that environmental factors are completely negligible. Studies suggest that environmental factors such as upbringing, education, and socioeconomic status can also have some impact on intelligence. Therefore, choice C is the best answer as it suggests that environment has some impact, but less so than heredity.

Adoption Studies of Intelligence Indicate That