Start Dating of pregnancy

Dating of pregnancy

(Twenge’s core finding is that teens are growing up more slowly than they used to, and Regnerus tells us of a 32-year-old subject who didn’t lose her virginity until age 22 but has had about 20 sexual partners since.) Those born in the ’90s and later — ’s focus — won’t start hitting 30 for a few years yet.

A 1992 survey suggested that 29 percent of men age 18–24 masturbated at least weekly, while the (roughly) comparable number from Regnerus’s survey is 49 percent.

For women, the numbers are 9 percent and 32 percent.

Looking at the data myself, I couldn’t find any trend for men in their thirties: Their median number of sex partners was six in the 1989–98 surveys (which I combined to boost the sample size a bit), six in the 2000–08 period, and . Women’s median has climbed from three to four over the same period, though it’s hard to tell if they’re actually having more sex or if they’re just more willing to admit it these days.

After all, sex-partner surveys are notorious for producing the mathematically impossible result that men are having more sex with women than women are having with men.

But this suggests a gender imbalance that doesn’t exist: The 10 percent of men with the most partners in Regnerus’s survey reported 52 percent of the (opposite-sex) sexual partners, compared with 48 percent for the top tenth of women.

It seems that a small share of both men and women participate heavily in the casual-sex scene, though it’s likely still true that more men than women would fail in that scene if they gave it a shot.

Such trends were the focus of the psychologist Jean Twenge’s ’s current-decade surveys and interviews.