One of the major changes in brain development between the ages of 3 and 15 involves an increase in the speed and efficiency of information traveling through the nervous system.This change is brought about by:

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Myelination is the process by which the nerve fibers are covered in a fatty substance called myelin, which helps them transmit information more quickly and efficiently. This process is responsible for the increase in speed and efficiency of information traveling through the nervous system between the ages of 3 and 15. Centration refers to the tendency of young children to focus on only one aspect of a situation, while tropism refers to the orientation of an organism in response to a stimulus. Neurogenesis refers to the growth and development of new neurons.

One of the Major Changes in Brain Development Between the Ages