A scientist has revealed the surprising difference between men and women when it comes to their ‘appetite for sex’.

Social psychologist Dr Sarah Hill has explained why different genders tend to look at sex differently, from an evolutionary point of view.

The US-based professor appeared on The Diary Of A CEO podcast to talk about the dangers of birth control pills, from ‘sabotaging sex to axing attraction’.

But during the November 25 episode, she also opened up about an old study conducted by the University of Florida involving a male and female model who would purposely approach strangers on campus.

“What the researchers did is they had a male and female model, so a really attractive person approached strangers on campus and they would introduce themselves,” Dr Hill said.

“They would just say ‘hello, I’ve been noticing you around campus and find you very attractive’.

“And after they made this introduction, they would then follow this with one of three requests.

“It would either be ‘would you like to go on a date with me, would you like to go back to my apartment with me, or would you like to go and have sex with me’.”

The study found was that for both men and women, 50 percent agreed to the date.

But what they discovered was that very few women said ‘yes’ to going back to the apartment with that person.

“And a full zero percent of women said that they would go back and have sex with the person,” Dr Hill continued.

“This isn’t what they found for men, right?

“For men, what they found was that men were more likely to agree to go back to somebody’s apartment with them than they were to the date.

“And men were most likely to agree to just have sex, almost 80 percent of men agreed, ‘Yeah I would love to go and have sex with you,’ and the men who said ‘no’, usually were in a relationship.”

Dr Hill noted that women are less reluctant to have sex with men because of the evolutionary fact that they can get pregnant, leaving ‘a minimum investment of nine months time in pregnancy and then subsequent time spent breastfeeding’.

“So for women who were sexually opportunistic, in other words, willing to consent to sex without strings or investment, women would have been penalised for that because throughout most of our evolutionary history that could result in a pregnancy,” she added.

Whereas men who ‘consent to sex without commitment, that’s an evolutionary win’.

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