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Increasing connections

The more experiences a child has, the more connections its brain cells will make. Many glial cells support and maintain these circuits, which almost triple the size of the brain in the first three years of a baby's life. Children who don't play or are rarely cuddled have underdeveloped brains. These children have the same number of brain cells, but fewer connections between them.

Nerve and glial cells in the brain.
Nerve and glial cells in the brain.
C Guerin, C Nolan, G Davidson/Wellcome Photo Library

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