Rhoads cited a study that reported that male infants are already more aggressive than females by the age of 16 months. That men are more aggressive, he said, is demonstrated by the fact that there are 28 men in jail for killing another man for every woman incarcerated for killing another woman.
Rhoads said one area where society has suffered due to the denial of this basic difference is in men's sports. Current law requires women to be equally represented in college athletics. Because women's interest in sports is not as high as men's, many schools have had to cut men's programs. Rhoads is concerned that many men, who need organized sports as an outlet for their aggression, will turn to less appropriate outlets.
Rhoads also said research indicates women are better nurturers than men and that for the most part women prefer being with their children to pursuing a professional career.
He says that children benefit from having their mothers home as well. In countries where the law requires both men and women to be given time off for the birth of a child, surveys indicate that men are much more likely to want to return to their jobs than women. Even when women are fulfilled in their career, Rhoads said, children suffer.
Rhoads pointed to one study that showed that the more mothers loved their jobs, the less mentally healthy their teenage daughters were. But mental health for teen girls improved as their father's job satisfaction increased. Another study revealed that chemicals, reflecting stress, increased in small boys while in day-care and decreased on the weekend when the boys were with their mothers.
Much of the data Rhoads cites about men make them out to be cads. By nature, he said, men tend to seek multiple sexual partners and eschew commitment. But Rhoads did say that men seem to have a natural aptitude for fulfilling duty. One study showed that in unhappy marriages, men were more likely to stick it out because of concern for the wife, while women were less concerned with hurting their spouse by calling it quits.