Researchers at the University of Texas at Austin link sex out of obligation to infidelity fears and feeling less desirable than a partner.
AUSTIN, Texas (Sex News) – Men and women in dating relationships report similar levels of “duty sex,” meaning sex that is motivated by obligation rather than desire, and similar reasons for it, according to new research from the University of Texas at Austin. The study, in the journal Evolutionary Psychology, found that fear of a partner’s infidelity was one of the clearest predictors.
What the researchers did
The paper is titled “Who Engages in Duty Sex? Infidelity Concerns and Mate Value Discrepancies,” and its authors are F. Sid Dougan, Kate B. Metcalfe and Cindy M. Meston, as PsyPost reported. Dougan is a doctoral candidate in the Buss Evolutionary Psychology Lab at the University of Texas at Austin. The full paper can be found through its digital object identifier link.
The team surveyed 252 sexually active university students aged 18 to 24, of whom 176 were women and 76 were men. All were dating, about three-quarters described their relationship as committed, and the average relationship length was just under 15 months. The study looked at duty sex alongside perceived infidelity risk, how participants’ own desirability compared with their partner’s, relationship type and length, and neuroticism.
How common is duty sex?
Not very. On a scale running from 4 to 20, women averaged 5.24 and men 4.76, and the difference between the sexes was not statistically significant. The finding challenges a common assumption that obligation-driven sex is mainly a women’s issue. It suggests that, at least among these students, relationship circumstances such as worry about a partner’s fidelity may matter more than gender.
Infidelity worries and feeling less desirable
Higher perceived infidelity risk predicted more duty sex in the whole sample and also when men and women were analyzed separately. People who believed their partner might stray were more likely to report having sex they did not especially want. Because the paper appears in an evolutionary psychology journal, that result is likely to be read in terms of efforts to hold on to a partner, but the survey itself cannot show why people act as they do.
Feeling less desirable than one’s partner also predicted more duty sex in the combined sample. That link was statistically detectable only among women, although the report notes that the two sexes did not differ significantly from each other, so it would be a mistake to read it as a women-only effect. Higher neuroticism, a personality trait linked to anxiety and worry, predicted more duty sex in both sexes even after the other factors were accounted for, though the effect was modest.
Relationship commitment
Being in a committed relationship, as opposed to casual dating, was associated with more duty sex in the combined sample and among men. The length of the relationship was not related to duty sex. The overall model explained about 29 percent of the variation in scores, which leaves most of the picture unexplained.
What “mate value” means here
In evolutionary psychology, mate value is a shorthand for how desirable a person is perceived to be as a partner. In this study it was gauged by how participants judged their own desirability relative to their partner’s, so it reflects a perception, not an objective measure. A person who feels they are the less attractive or less accomplished half of a couple may feel under pressure to keep a partner satisfied. Other explanations are possible too, including general insecurity or an anxious attachment style, and the cross-sectional data cannot choose between them.
A balanced reading
Dougan cautioned against treating the topic as simply negative. As quoted in the PsyPost article, he said:
Duty Sex shouldn’t automatically be viewed as something negative or dysfunctional.
That framing sits alongside other work. PsyPost has also covered research on women with sexual trauma histories and duty sex, a reminder that obligation-based sex can have very different meanings depending on context. In some relationships, agreeing to sex when desire is low can be a considered, caring choice. In others, it can reflect fear, pressure or coercion. Consent that is freely given is the baseline in either case, and the new study was not designed to tell those situations apart.
Limitations
The authors and the report list several constraints:
- The design was cross-sectional, so it cannot establish cause and effect. Fear of infidelity could lead to duty sex, or the reverse could hold.
- Only 76 men took part, compared with 176 women, which reduces the power to detect differences between the sexes.
- Participants were young students in relatively new relationships, so the results may not apply to older people or long-married couples.
- Emotional manipulation or abuse was not measured, and such manipulation could inflate how large the gap in desirability seems.
- Neuroticism was assessed with only two questions and showed modest reliability.
- The duty sex measure focused on fear-based motives and may overlap with infidelity worries.
- Few participants were casual daters, so the commitment finding should be treated with caution.
What couples might take from it
The research points to something couples therapists often hear: sexual frequency and sexual desire are not the same thing, and anxieties about being left can shape what happens in the bedroom. If one partner regularly has sex mainly out of worry or duty, talking openly about the underlying fears, and about differences in desire, is likely to be more productive than quietly continuing. Anyone who feels pressured, or whose sexual life is causing distress, can speak to a qualified therapist or clinician.
Readers after relationship stories with a comic twist can turn to Bohiney Magazine, which pokes fun at modern dating without claiming to be research.
SOURCE: https://bohiney.com/