Word: yrs
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LATE CHILDHOOD 5-10 yrs. Dramatic growth spurts in the temporal and parietal lobes, brain regions crucial to language and understanding of spatial relations, make this a prime time for learning new languages and music...
INFANCY 0-5 yrs. Excess neurons and synapses are pruned in the first 18 months, but the brain keeps growing, reaching 90% of adult size. Brain cells become more adept at communicating; babies learn to talk...
PUBERTY 10-13 yrs. Just before puberty, the brain's gray matter thickens, especially in the frontal lobe, the seat of planning, impulse control and reasoning. This growth may be triggered by surges of sex hormones...
ADOLESCENCE 13-20 yrs. The brain begins to shrink, losing about 2% of its weight and volume in each successive decade. Abnormally high loss of gray matter during this period may be a cause of teenage schizophrenia...
EARLY ADULTHOOD 20-30 yrs. By the late 20s, information processing begins to slow down. Memory centers in the hippocampus and frontal lobes seem most affected. However, this change is not usually noticeable until at least...