There are just way too many confounding variables to get anything meaningful from IQ alone.
Girls with lower IQs tend to be from poorer families. Their parents often are unable to monitor them and this makes them more likely to be in situations where sex is likely. Very few girls from wealthy families have sex early. There is a snowball effect to having sex earlier and age of first intercourse is an extremely powerful predictor of promiscuity. Women who lose their virginity before age 15 have more lifetime partners, higher amounts of unprotected sex, etc.
Girls with higher IQs tend to be from wealthier families who are able to monitor them. They are more likely to have a parent who does not have to work and will be present with them. They are likely to go to schools with better monitoring and lower risk peers. So, it's much more likely they will have sex later on in life which lowers a lot of other risk factors and lowers total partner count.
Keep in mind that most people are not as promiscuous as you might think. Roughly 40% of people have had four or fewer partners in their lifetime. As much as this forum rants and raves about hypergamy and all women being sluts etc, the actual number of partners for women has been on the decline and the current generation of women are the least promiscuous in over sixty years. Most of the thinking around promiscuity is outdated-- the 18-26 year olds of today are not the same as the ones of ten years ago. Especially given the rise of the helicopter parent, the improvement in monitoring technology (cellphones), and the decrease of unmonitored time resulting from the decline of car culture. All of these things give rise to a less promiscuous generation and means getting the bang is going to become more challenging.
More useful predictors of promiscuity:
1. Drinking. Heavy Episodic Drinking. As Roosh said, alcohol is basically sex fuel. The more a girl drinks, the more likely she is to engage in promiscuous behavior. If you meet a girl and she's drunk, odds are that's a normal thing for her.
2. Tattoos. Duh.
3. Feminist / anti-slut-shame posts on social media. Though they usually phrase these as if they are defending "someone else", the thing is, non-sluts don't care about what sluts do and aren't even thinking about it.
4. Depression. Sarcasm and pessimism are good indicators of depression. Depression is highly correlated with promiscuity in young women.
5. Low Waist to Hip Ratio. Women with lower WHRs have more casual sex. "Females in our sample with low WHR reported sex at earlier ages, more sex partners, more EPCs, and more times having been EPC partners. These findings extend those of Mikach and Bailey (1999) who found that women with low WHRs have more casual sex."
6. Parents are Divorced. "In addition to an increased likelihood of being sexually active, girls from divorced families are more likely to engage in risky sexual behavior, to have more frequent sexual intercourse, and to have more sexual partners"
7. Had Sex Early. Already discussed above. "For women the strongest predictors of sexual promiscuity were marital status and age at first intercourse."
8. No Church Attendance or Religion.
9. Post Graduate Education.
10. many male friends/coworkers.
11. Unpatriotic behavior/ideals.
12. Pro-homosexuality.
I got lazy but there are good studies backing up all of the above. While 7 might be hard to find out, some of the others are really easy.
Girls with lower IQs tend to be from poorer families. Their parents often are unable to monitor them and this makes them more likely to be in situations where sex is likely. Very few girls from wealthy families have sex early. There is a snowball effect to having sex earlier and age of first intercourse is an extremely powerful predictor of promiscuity. Women who lose their virginity before age 15 have more lifetime partners, higher amounts of unprotected sex, etc.
Girls with higher IQs tend to be from wealthier families who are able to monitor them. They are more likely to have a parent who does not have to work and will be present with them. They are likely to go to schools with better monitoring and lower risk peers. So, it's much more likely they will have sex later on in life which lowers a lot of other risk factors and lowers total partner count.
Keep in mind that most people are not as promiscuous as you might think. Roughly 40% of people have had four or fewer partners in their lifetime. As much as this forum rants and raves about hypergamy and all women being sluts etc, the actual number of partners for women has been on the decline and the current generation of women are the least promiscuous in over sixty years. Most of the thinking around promiscuity is outdated-- the 18-26 year olds of today are not the same as the ones of ten years ago. Especially given the rise of the helicopter parent, the improvement in monitoring technology (cellphones), and the decrease of unmonitored time resulting from the decline of car culture. All of these things give rise to a less promiscuous generation and means getting the bang is going to become more challenging.
More useful predictors of promiscuity:
1. Drinking. Heavy Episodic Drinking. As Roosh said, alcohol is basically sex fuel. The more a girl drinks, the more likely she is to engage in promiscuous behavior. If you meet a girl and she's drunk, odds are that's a normal thing for her.
2. Tattoos. Duh.
3. Feminist / anti-slut-shame posts on social media. Though they usually phrase these as if they are defending "someone else", the thing is, non-sluts don't care about what sluts do and aren't even thinking about it.
4. Depression. Sarcasm and pessimism are good indicators of depression. Depression is highly correlated with promiscuity in young women.
5. Low Waist to Hip Ratio. Women with lower WHRs have more casual sex. "Females in our sample with low WHR reported sex at earlier ages, more sex partners, more EPCs, and more times having been EPC partners. These findings extend those of Mikach and Bailey (1999) who found that women with low WHRs have more casual sex."
6. Parents are Divorced. "In addition to an increased likelihood of being sexually active, girls from divorced families are more likely to engage in risky sexual behavior, to have more frequent sexual intercourse, and to have more sexual partners"
7. Had Sex Early. Already discussed above. "For women the strongest predictors of sexual promiscuity were marital status and age at first intercourse."
8. No Church Attendance or Religion.
9. Post Graduate Education.
10. many male friends/coworkers.
11. Unpatriotic behavior/ideals.
12. Pro-homosexuality.
I got lazy but there are good studies backing up all of the above. While 7 might be hard to find out, some of the others are really easy.