Re:Testosterone levels? (Score 1)

"Exposure to testosterone in the womb is said to promote development of areas of the brain often associated with spatial and mathematical skills, he said. That hormone makes the ring finger longer. Estrogen exposure does the same for areas of the brain associated with verbal ability and tends to lengthen the index finger relative to the ring finger."

http://news.yahoo.com/s/livescience/20070523/sc_li vescience/fingerlengthpredictssatperformance