Time: Type A Personalities Make More Babies
A new study in the Journal of Personality theorizes that it is not necessarily wealth that facilitates procreation but a more basic and deeply ingrained evolutionary trait — having a Type A personality. The study finds that adolescents who say they always take charge, tell others what to do, anger quickly, get into fights easily, and walk, talk and eat fast end up having more kids than others when they grow up.
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Original Article
http://www.time.com/time/health/article/0,8599,1888608,00.html