Feeling frisky makes you see what you want to see

“If people anticipate that a partner shares their attraction, it is that much easier to initiate contact, because the fear of rejection is lessened”–coauthor Harry Reis, a professor of psychology and the Dean’s Professor in Arts, Sciences & Engineering at Rochester

“People are more likely to desire potential partners and to project their desires onto them when sexually aroused,” says lead author

Gurit Birnbaum

, a social psychologist and associate professor of psychology at the IDC. “Our findings suggest that the sexual system prepares the ground for forming relationships by biasing interpersonal perceptions in a way that motivates human beings to connect. Clearly the sexual system does so by inspiring interest in potential partners, which, in turn, biases the perceptions of a potential partner’s interest in oneself.”

Evolutionary principles at play

Having evolved over millennia, the sexual behavioral system of humans ensures reproduction and survival of the species by arousing sexual urges that motivate us to pursue mates. Success depends on targeting the right potential partners who are not only perceived as desirable but also as likely to reciprocate our advances. In

previous studies

the researchers found that people often refrain from courting desirable possible partners because they fear rejection.

“Forming stable sexual relationships had, and continues to have, a great deal of evolutionary significance,” says study coauthor

Harry Reis

, a professor of psychology and the Dean’s Professor in Arts, Sciences & Engineering at Rochester.

“If people anticipate that a partner shares their attraction, it is that much easier to initiate contact, because the fear of rejection is lessened,” says Reis. “One of the main purposes of sexual attraction is to motivate people to initiate relationships with potentially valuable, and valued, partners.”

Testing the effects of a sexy mindset

Across three experiments the team discovered that sexual activation helps people initiate relationships by inducing them to project their own desires onto prospective partners. In other words–you see what you want to see if you’ve been sexually primed.

To test the effects of a sexy mindset, the team exposed participants across three separate studies either to sexual (but not pornographic) stimuli or to neutral stimuli. Next, the participants encountered a potential partner and rated this partner’s attractiveness and romantic interest in them. Participants’ interest in the partner was self-reported or evaluated by raters.

In the first study, 112 heterosexual participants, aged 20 to 32, who were not in a romantic relationship, were randomly paired with an unacquainted participant of the other sex. First, participants introduced themselves to each other by talking about their hobbies, positive traits, and future career plans while being videotaped. Then the team coded the videotaped introductions for nonverbal expressions of so-called immediacy behavior–such as close physical proximity, frequent eye contact, and flashing smiles–that indicates interest in initiating romantic relationships. They discovered that those participants exposed to a sexual stimulus (versus those exposed to the neutral stimulus) exhibited more immediacy behaviors toward potential partners and perceived the partners as more attractive and interested in them.

For the second study, 150 heterosexual participants, aged 19 to 30, who were not in a romantic relationship, served as a control for the potential partner’s attractiveness and reactions. Here, all participants watched the same prerecorded video introduction of a potential partner of the other sex and then introduced themselves to the partner while being videotaped. The team coded the videotapes for attempts to induce a favorable impression. Just as in the first study, the researchers found that activation of the sexual system led participants to perceive potential partners as more attractive as well as more interested in a romantic relationship.

In the third study, the team investigated whether a participant’s romantic interest in the other participant might explain why sexual activation affects perceptions of others’ romantic interest in oneself. Here, 120 heterosexual participants, aged 21 to 31, who were not in a romantic relationship, interacted online with another participant, who in reality was an attractive opposite-sex member of the research team, in a get-to-know-each-other conversation. The participants rated their romantic interest in the other person as well as that person’s attractiveness and interest in them. They found again that sexual activation increased a participant’s romantic interest in the other participant, which, in turn, predicted perceiving the other as more interested in oneself. Having active sexual thoughts apparently arouses romantic interest in a prospective partner and encourages the adoption of an optimistic outlook on courting prospects with a partner, concluded the researchers.

“Sexual feelings do more than just motivate us to seek out partners. It also leads us to project our feelings onto the other person,” says Reis. “One important finding of the study is that the sexual feelings need not come from the other person; they can be aroused in any number of ways that have nothing to do with the other person.”

Yet, there’s also the obvious possible pitfall: when sexual feelings are present, people tend to assume that the other person shares their attraction, whether warranted or not, notes Reis. “Or you end up kissing a lot of frogs,” adds Birnbaum, “because a sexy mood makes you mistake them for princes.”

Birnbaum and Reis have spent the last few decades studying the dynamics of human sexual attraction. In a

2019 study

, the duo found that when people feel greater certainty that a prospective romantic partner reciprocates their interest, they will put more effort into seeing that person again. Furthermore, people will rate the possible date as more sexually attractive than they would if they were less certain about the prospective date’s romantic intentions.

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The research team for the latest study, which was supported by the

Binational Science Foundation

(BSF) also included Mor Iluz, Einat Plotkin, Lihi Tibi and Ronit Hematian at the IDC, and Moran Mizrahi at Ariel University.