A recent study, published in the “Proceeding of the National Academy of Sciences,” suggests that if a man has smaller test!cles, it may be likely that he will be more involved in parenting his children.
This is the first study that has shown a connection between test!cle volume and parenting, although other studies have suggested that men with higher testosterone levels are less likely to be good at raising children.
According to the study, the size of a man’s g0nads determines how much s*men will be produced during ej@culation. The greater amount of s*men that is secreted during each ej@culation, the smaller the parenting output that will be given later on, the study also found.
James Rilling, associate professor of anthropology at Emory University, Atlanta and one of the authors of the study said that children who have fathers who get more involved with parenting, usually have better developmental outcomes in Western society.
According to Rilling, they wanted to find out why some fathers don’t pay as much attention to the raising of their kids as other fathers do. He added that during the latter half of the 20th century, the number of fathers who are absent has increased dramatically and they wanted to find out if there was some biological reason for that.
Although testosterone is one reason why fathers don’t get so involved with the raising of their children, Rilling believes that test!cular volume may have more to do with it than testosterone.
During the study, 70 biological fathers were found in Atlanta who permitted the researchers to study their brains and their gonads with Magnetic Resonance Imaging (MRI). The men were given photographs of their child while their brains were monitored.
The MRIs found, that in men with smaller gonads, the area of their brains that is most associated with nurturing lit up more than those men with bigger nuts. The results also showed that when they were shown pictures of their children displaying some emotion, their brains were more stimulated.
The volunteer’s partners were also asked to fill out questionnaires asking how involved their men were in rearing their children.
The women were asked how their men responded to such things as taking the kids to the doctor and seeing to their children late at night if they woke up. The results showed that the men with the smaller cojones, were voted by their partners to be the most helpful in raising their children.
However, Rilling states that having kids does not shrink the size of the test!cles. He adds that men who didn’t have children were also put under their tests and the MRI to find out if having kids determined the size of a man’s g0nads.
“We don’t know the direction of the causality,” Rilling admits. He continued “It could be that as men become more involved in care-giving the testes shrink.” He adds that it’s more likely that guys with not so much in the area of nuts are a little better at caring for their children, in his belief.