Dr. Peter Hurd initially thought the idea was "a pile of hooey", but he changed his mind when he saw the data.
Hurd and his graduate student Allison Bailey have shown that a mans index finger length relative to ring finger length can predict how inclined that man is to be physically aggressive. Women do not show a similar effect.
A psychologist at the University of Alberta, Hurd said that it has been known for more than a century that the length of the index finger relative to the ring finger differs between men and women. More recently, researchers have found a direct correlation between finger lengths and the amount of testosterone that a fetus is exposed to in the womb. The shorter the index finger relative to the ring finger, the higher the amount of prenatal testosterone, and--as Hurd and Bailey have now shown--the more likely he will be physically aggressive throughout his life.
Ryan Smith | EurekAlert!
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3% more academic staff at higher education institutions
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