By age 4,
A) many parts of the cerebral cortex have overproduced synapses.
B) synaptic pruning is fully completed.
C) preschoolers show declines in attention and focus.
D) the brain is nearly half of its adult size.

Question

Quizplus · Accepted Answer

By age 4, many parts of the cerebral cortex have overproduced synapses. Synaptic pruning, the process of eliminating unnecessary synapses, does not fully complete until adolescence. Preschoolers actually show improvements in attention and focus compared to toddlers. The brain is about 80% of its adult size by age 3.

By Age 4