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25 min.
4
356 words
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UConsiderable attention has been paid to the size or relative size
of the human brain. The first point of interest is that ,., the ratio
of brain weight to body is at a maximum at birth and decreases
with age, reaching a fairly steady level by maturity. In other
5 Words, newborn babies have very large brains, relatively speaking,
weighing some 300 grams. This is roughly the size of the brain
of an adult male chimpanzee. Children and their brains continue
to grow for many years, gradually increasing their ability to learn
and remember. There have been suggestions that the growth of
10 the brains of children is not steady, but occurs suddenly, each
period of rapid growth ( 2 ) associated with a particularly
