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Strategies & Market Trends : 2026 TeoTwawKi ... 2032 Darkest Interregnum -- Ignore unavailable to you. Want to Upgrade?

To: SG who wrote (69712)	12/17/2010 12:04:22 AM
From: Maurice Winn	1 Recommendation Read Replies (2) \| Respond to of 217980

Surely you know that women reach puberty and adulthood about 3 years earlier than men do. The range is +/- about this much: en.wikipedia.org <Less than 10% of U.S. girls start to menstruate before 11 years of age, and 90% of all US girls are menstruating by 13.75 years of age, with a median age of 12.43 years. This age at menarche is not much different (0.34 years earlier) than that reported for U.S. girls in 1973. Age at menarche for non-Hispanic black girls was significantly earlier than that of white girls at 10%, 25%, and 50% of those who had attained menarche, whereas Mexican American girls were only slightly earlier than the white girls at 25%.[12] > Keep in mind that menarche onset is not the same thing as brain growth. That's like measuring feet to determine the size of the brain and foot size is probably a better measure of when the brain is fully grown [near enough for government work] because when feet stop growing, heads have pretty well stopped growing too, though some people get very big heads as they age and their bank accounts become more substantial. I just use menarche because it's a traditional measurement for which there is good data [whereas I guess foot size has not been studied so much]. Your guess on the standard deviation was wrong. It is not very big at all. You only need to look at a class of 14 year old boys and "girls" at high school to see for yourself. The boys are nearly all pipsqueaks. The girls are quite developed hot young women with large brains. I remember my time at that age well. The girls in our class were more interested in males very considerably older than their classmates. Mqurice