James,a 6-year-old,can correctly name objects,catch a ball and throw it,and write his ABCs in proper sequence.His younger brother Mark is much less speedy and skillful in all of these areas.What is the BEST explanation for James's superior performance?

Question

Quizplus · Accepted Answer

Myelination is the process of forming a myelin sheath around a nerve to allow nerve impulses to move more quickly. As James is able to perform the tasks with greater speed and skill, it is likely that his brain has experienced greater myelination than Mark's, giving him an advantage in these areas.

James,a 6-Year-Old,can Correctly Name Objects,catch a Ball and Throw It,and