Do all humans have roughly the same-sized brains, or can it vary significantly from person to person?
by 
Massey
ANSWERS: 1
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The mass of a newborn human brain is about 350-400g. The mass of an adult human brain is about 1,300 to 1,500 g. The brain makes up about two percent of the human"s mass. Its average width is about 140 mm, average length is about 167 mm, and average height about 93 mm. (source http://hypertextbook.com/facts/2003/RachelScottRosenbluth.shtml) Intelligence is measured more by the desity of your neurons, than by the size. Yet another situation where "It is not the size that counts, but what you do with it that really matters."
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