The Attention Span of the Average Fourth-Grader Is Much Longer

question 108

Multiple Choice

The attention span of the average fourth-grader is much longer than that of the average first grader.Which of the following biological changes is primarily responsible for this?

• A)Increased growth of the corpus callosum
• B)Continued myelination of the optic neurons and their connections to the occipital lobe
• C)Continued myelination of the frontal lobes and reticular formation and the nerves that link the two
• D)Rapid growth of the reticular formation

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