Saliva test after watching porn predicts if you want baby

A simple saliva test done on a man after he has watched a porn video can predict whether he wants to become a father or not, reveals a recent research.

The results showed that men who expressed a greater interest in babies had relatively small increase in testosterone after viewing stimulating videos when compared to those who had less interest.

To reach this conclusion, researchers from the University of Chicago investigated whether there were also biological changes capable of indicating a man's inclination toward fatherhood.

They recruited 100 young heterosexual men none of whom were fathers prior to the research.

Volunteers were asked 12 questions to gauge their interest in babies. They were also asked to complete a survey assessing their feelings about certain ideas, such as casual sex and their relationship with their family.

The participants were asked to provide a saliva sample to serve as the control before being left alone in a room to watch a 12-minute erotic film.

They then provided another saliva sample once the film was over and then again 10 minutes later.

"Young men who don't like babies as much get more physiologically aroused by visual sexual stimuli," said study co-author Dr Dario Maestripieri.

"These men 'live on the fast lane'. They are attracted to and aroused by novel sexual partners and are ready to take advantage of new sexual opportunities when they present themselves," he said.

"By contrast, young men who like babies more are less sexually aroused by novel sexual stimuli (for example, erotic content), but they presumably enjoy sex more in the context of stable monogamous relationships with partners they know well," the study found.

"We think that showing these mind-body connections is very novel and very exciting," Maestripieri said in a paper published in the journal Psychological Science.