In some maternity wards girls are wrapped in pink blankets, while the boys are wrapped in blue. As they grow,males and females are pushed in different directions. All of these cultural expectations, and behavior affect the personality of males and females. With these facts people wonder whether sexual preference is instituted at birth, or rather learned with age. Some experts wonder whether it is testosterone that effects the behavioral differences between males and females.
Men have ten times more testosterone levels than females.
When baby girls are exposed to more testosterone in the womb, the engage in more roughhousing then the average girl. Sociobiologist agree with the nature of this theory, they believe that our social behaviors are affected primarily through evolution. Certain sociolgists believe that we have an inborn desire to help people , insuring the survival of our species that relates back to caveman days. Some sociologist argue that animals as well as human's have personalties which must come from genetics. This is the idea of not letting people with any sort of handicap reproduce.