Alex Tabarrok writes in the Marginal Revolution weblog about competitive differences between males and females. His writing is based on an article in the August 2003 issue (Vol. 118, Issue 3) of The Quarterly Journal of Economics written by Uri Gneezy, Muriel Niederle and Aldo Rustichini. Very interesting implications for sports as well as business.
[I]n the single-sex tournaments the women’s performance improves considerably relative to both their performance in the piece rate system and to their performance in the mixed tournament. Women do like to compete just not against men!