The quantity of white matter-mylenated axons-increases dramatically during adolescence, while, at the same time, the quantity of grey matter-the slower, unmylenated axons-generally decreases in density.

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Quizplus · Accepted Answer

This is true. The increase in white matter is associated with improvements in cognitive abilities such as attention, motor speed, and working memory. The decrease in grey matter density is thought to reflect pruning of unnecessary neural connections and increased neural efficiency.

The Quantity of White Matter-Mylenated Axons-Increases Dramatically During Adolescence, While