Compared with the brains of people with average intelligence, the brains of highly intelligent people
A) do not show any systematic structural differences, because intelligence is determined by environmental factors, not biological factors.
B) show higher volumes of gray matter and cortical thickness in the prefrontal and temporal lobes.
C) show thinner cortical layers.
D) are actually smaller in volume, making them operate more efficiently.

Question

Quizplus · Accepted Answer

Studies have found that highly intelligent individuals have higher volumes of gray matter and thicker cortices in areas associated with cognitive processing, such as the prefrontal and temporal lobes. This suggests that biological factors play a role in intelligence, in addition to environmental factors.

Compared with the Brains of People with Average Intelligence, the Brains