Increase in brain size and weight during early childhood is due to ____.

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The increase in brain size and weight during early childhood is mainly due to dendritic connections and myelination. This process enhances the efficiency of neural communication and improves cognitive functioning. While cerebral spinal fluid and the increase in blood volume do play a role in brain development, they do not account for the significant increase in brain size and weight during early childhood. The number of neurons also plays a role in brain development, but it is not the primary factor in the increase in brain size and weight during early childhood.

Increase in Brain Size and Weight During Early Childhood Is