One interesting observation is the 80/20 rule in the sexual marketplace.

The current study suggests that a small segment of highly sexually successful men have seen a significant INCREASE in their n-counts between 2002 to 2011-2013

Full Study:

https://journals.lww.com/stdjournal/Fulltext/2017/02000/Changes_in_the_Distribution_of_Sex_Partners_in_the.5.aspx

Objective

The purpose of the current analysis is to examine subgroup differences in the distribution of opposite-sex sex partners in the United States across an approximate 10-year period to identify patterns that may inform sexually transmitted infection research and prevention.

In particular, the top 20% of men and the top 5% of men saw a statistically significant increase in the number of partners that they are having.

Males

Median lifetime opposite-sex sex partners for males between 2002 and 2011–2013 remained unchanged at 5 opposite-sex sex partners (Table 2), nor were changes identified among subgroups of men.

Conversely, we found an overall statistically significant increase in reported lifetime opposite-sex sex partners overall for men in the top 20% from 12 in 2002 to 15 in 2011–2013 (95% CIs, 11–14 and 15–15, respectively)

Similarly, there was a statistically significant overall increase in reported lifetime partners for men in the top 5% from 38 in 2002 to 50 in 2011–2013 (95% CIs, 30–40 and 50–50, respectively),

The same observation was not found in women. Their most successful haven't seen an increase at all.

Women

We did not find significant changes in the median number of lifetime opposite-sex sex partners reported by females over time overall (change from 3 in 2002 to 4 in 2011–2013; ns Table 1), or among subgroups. Similarly, no significant changes were identified among women in the top 20% (change from 7 in 2002 to 8 in 2011–2013; ns Table 1) and top 5% (unchanged from 20 in 2002 to 20 in 2011–2013; ns Table 1), overall, and among subgroups.

There was an increase in the average number of reported partners between 2002 and 2011-2013 for all women. As a result of this increase, women are now reporting an n-count that isn't statistically significant from the men.

In 2002, there were significant differences between men and women in median number of lifetime sex partners with men reporting more lifetime partners. However, in the 2011–2013 data, these differences are no longer significant.

However, its important to note that other studies have found that women tend to underreport their numbers by about 50%. Meanwhile men over report their numbers by about 8%

https://www.newscientist.com/article/dn3936-fake-lie-detector-reveals-womens-sex-lies/#:~:text=Women%20change%20their%20answers%20depending,to%20a%20lie%20detector%20machine.

My questions are as follows:

  1. Where might this increase in partners for the top 20% and 5% of men have come from?

  2. Since the majority of this increase was for the top 5% of men, is the 80/20 rule becoming the 90/10 rule? Or is something else going on?

  3. Since the average n-counts for women increased, are they telling the truth now?