Brain-Imaging Techniques Show That Peak Thickness of the Cerebral Cortex

Multiple Choice

Brain-imaging techniques show that peak thickness of the cerebral cortex occurred three years later in children with ADHD than children without ADHD. The delay was more prominent in the prefrontal regions of the brain that play an important role in which of the following?

A) Memory and speech
B) Visual processing
C) Muscle control
D) Attention and planning