Twin studies show that intelligence ____.
A) stems both from genes and from the environment
B) in children is primarily due to environment, but in adults it is primarily due to genes
C) is primarily dependent upon genes
D) is primarily dependent upon the environment

Question

Quizplus · Accepted Answer

Twin studies show that both genes and environment play a role in determining intelligence. While genetics may account for around 50-80% of intelligence, the rest may be influenced by environmental factors such as nutrition, education, and upbringing. Therefore, choice A is the best answer as it acknowledges the role of both genes and the environment in shaping intelligence. Choices B, C, and D are not accurate as they either overemphasize the role of genes or the environment in determining intelligence.

Twin Studies Show That Intelligence ____