(Mis)Perceiving Sexual Intent: A Mixed-Method Approach Investigating Sexual Overperception Across Diverse Sexual Identities.

Research on perceptions of sexual interest has documented the tendency for men to overperceive sexual interest (i.e., to perceive a social signal as indicating more sexual intent than the actor intended). However, this work has almost exclusively focused upon these dynamics among heterosexual individuals. Thus, the current set of studies aimed to understand how perceptions of sexual interest manifest among lesbian, gay, and bisexual (LGB) women and men. In Study 1 (N = 85), LGB women and men nominated behaviors that signal sexual intent. Using an act nomination approach, LGB women and men tended to nominate behaviors similar to those nominated by heterosexual women and men. In Study 2 (N = 43), gay men reported acts that were representative of their own and other gay men's sexual interest. Consistent with previous work-by comparing perceived self-reported versus others' sexual intent when engaging in specific behaviors-we found no evidence for a sexual overperception bias in gay men, albeit in a small field study. In Study 3 (N = 307), using a gender-by-sexual orientation design, heterosexual and LGB women and men reported previous experiences in which their friendliness was sexually misperceived. Bisexual women were less likely than other groups to report their friendliness being misinterpreted as sexual by other bisexual women and/or lesbians. Additionally, across all genders and sexual orientations, participants reported feelings of indifference, awkwardness and embarrassment when being misperceived. Ultimately, the current studies' results provide broader insight into the nature of sexual overperception among LGB populations.

The Role of Emotion Projection, Sexual Desire, and Self-Rated Attractiveness in the Sexual Overperception Bias.

A consistent finding in the literature is that men overperceive sexual interest in women (i.e., sexual overperception bias). Several potential mechanisms have been proposed for this bias, including projecting one's own interest onto a given partner, sexual desire, and self-rated attractiveness. Here, we examined the influence of these factors in attraction detection accuracy during speed-dates. Sixty-seven participants (34 women) split in four groups went on a total of 10 speed-dates with all opposite-sex members of their group, resulting in 277 dates. The results showed that attraction detection accuracy was reliably predicted by projection of own interest in combination with participant sex. Specifically, men were more accurate than women in detecting attraction when they were not interested in their partner compared to when they were interested. These results are discussed in the wider context of arousal influencing detection of partner attraction.

Disease, perceived infectability and threat reactivity: A COVID-19 study.

Using a two-wave online experiment, we investigate whether COVID-19 exposure changes participants' threat-detection threshold. Threat reactivity was measured in a signal detection task among 277 British adults who also reported how vulnerable they felt to infectious diseases. Participants' data were then matched to the local number of confirmed COVID-19 cases announced by the NHS every day. We found that participants who perceive themselves as more likely to catch infectious diseases displayed higher threat reactivity in response to increased COVID-19 cases.

Sex Differences in Misperceptions of Sexual Interest Can Be Explained by Sociosexual Orientation and Men Projecting Their Own Interest Onto Women.

Sex differences in misperceptions of sexual interest have been well documented; however, it is unclear whether this cognitive bias could be explained by other factors. In the current study, 1,226 participants (586 men, 640 women) participated in a speed-dating task in which they rated their sexual interest in each other as well as the sexual interest they perceived from their partners. Consistent with previous findings, results showed that men tended to overperceive sexual interest from their partners, whereas women tended to underperceive sexual interest. However, this sex difference became negligible when we considered potential mediators, such as the raters' sociosexual orientation and raters' tendency to project their own levels of sexual interest onto their partners. These findings challenge the popular notion that sex differences in misperceptions of sexual interest have evolved as a specialized adaptation to different selection pressures in men and women.

The erroneous signals of detection theory.

Signal detection theory has influenced the behavioural sciences for over 50 years. The theory provides a simple equation that indicates numerous 'intuitive' results; e.g. prey should be more prone to take evasive action (in response to an ambiguous cue) if predators are more common. Here, we use analytical and computational models to show that, in numerous biological scenarios, the standard results of signal detection theory do not apply; more predators can result in prey being less responsive to such cues. The standard results need not apply when the probability of danger pertains not just to the present, but also to future decisions. We identify how responses to risk should depend on background mortality and autocorrelation, and that predictions in relation to animal welfare can also be reversed from the standard theory.

Under the influence: exogenous testosterone influences men's cross-sex perceptions of sexual interest.

The sexual misperception bias is a cognitive bias in which men tend to overestimate sexual interest from women, potentially shaped by evolutionary mating strategies. Testosterone, often linked to mating behaviors, might play a role in sustaining sexual overperceptions. To explore this possibility, we conducted a placebo-controlled study with 190 heterosexual men, administering either 11 mg of testosterone or a placebo. Participants interacted with an attractive female confederate, while naïve raters assessed the confederate's affiliative behaviors. Our findings suggest that exogenous testosterone did not broadly impact sexual overperception. However, we found that affiliative behavior from the confederate was positively correlated with perceived sexual interest among testosterone-treated, but not placebo-treated men. In addition, we found that this effect among testosterone-treated men was contingent on their self-perceived attractiveness. Specifically, the confederate's affiliative behaviors were positively correlated with perceived sexual interest, but only for testosterone-treated men with average or above average self-perceived attractiveness. Furthermore, our data revealed that men's tendency to project their own short-term and long-term mating interests increases as a function of self-perceived attractiveness, and this coupling is enhanced by testosterone for long-term interest. Taken together, these results suggest that testosterone may potentiate existing biases, particularly when sexual motivation is high, and bias perceptions of friendly behavior when engaging in cross-sex mindreading. This study adds to the understanding of the neuroendocrine bases of social cognition, suggesting that testosterone can affect men's perceptions of potential mates.

Formalizing the Hidden Curriculum of Performance Enhancing Errors.

Despite its inevitability, error remains an uncomfortable topic for discussion amongst surgeons. There are a range of reasons cited for this; significantly, there is an inextricable link between a surgeon's actions and their patient's outcomes. Attempts to reflect on error are often unstructured and without a defined end point, and modern surgical curricula lack content to guide residents' learning on recognizing and reflecting on sentinel events. There is a need to develop a tool to guide a standardized, safe, and constructive response to error. The current educational paradigm revolves around error avoidance. However, there is an evolving evidence base surrounding the inclusion of error management theory (EMT) into surgical training. This method explores and incorporates positive discussions surrounding errors, and has been demonstrated to improve long-term skill acquisition and training outcomes. We must harness the performance enhancing effects of our errors in the same way we do our successes. Implicated in all surgical performance is human factors science/ergonomics (HFE) - the interface between psychology, engineering, and performance. Developing a national HFE curriculum in the context of EMT would provide a common language to facilitate objective reflections regarding surgeons' operative performance and manage the stigma associated with fallibility.

Useful misrepresentation: perception as embodied proactive inference.

According to the predictive processing framework, perception is geared to represent the environment in terms of embodied action opportunities as opposed to objective truth. Here, we argue that such an optimisation is reflected by biases in expectations (i.e., prior predictive information) that facilitate 'useful' inferences of external sensory causes. To support this, we highlight a body of literature suggesting that perception is systematically biased away from accurate estimates under conditions where utility and accuracy conflict with one another. We interpret this to reflect the brain's attempt to adjudicate between conflicting sources of prediction error, as external accuracy is sacrificed to facilitate actions that proactively avoid physiologically surprising outcomes. This carries important theoretical implications and offers new insights into psychopathology.

The evolution of distorted beliefs vs. mistaken choices under asymmetric error costs.

Why do people sometimes hold unjustified beliefs and make harmful choices? Three hypotheses include (a) contemporary incentives in which some errors cost more than others, (b) cognitive biases evolved to manage ancestral incentives with variation in error costs and (c) social learning based on choice frequencies. With both modelling and a behavioural experiment, we examined all three mechanisms. The model and experiment support the conclusion that contemporary cost asymmetries affect choices by increasing the rate of cheap errors to reduce the rate of expensive errors. Our model shows that a cognitive bias can distort the evolution of beliefs and in turn behaviour. Unless the bias is strong, however, beliefs often evolve in the correct direction. This suggests limitations on how cognitive biases shape choices, which further indicates that detecting the behavioural consequences of biased cognition may sometimes be challenging. Our experiment used a prime intended to activate a bias called 'hyperactive agency detection', and the prime had no detectable effect on choices. Finally, both the model and experiment show that frequency-dependent social learning can generate choice dynamics in which some populations converge on widespread errors, but this outcome hinges on the other two mechanisms being neutral with respect to choice.

Error management in plant allocation to herbivore defense.

Herbivores can greatly reduce plant fitness. Error management theory (EMT) predicts the evolution of adaptive plant defensive strategies that err towards making less-costly errors so as to avoid making rare, costly errors. EMT provides a common framework for understanding observed levels of variation in plant defense among and within species.

Relationship dealbreakers: traits people avoid in potential mates.

Mate preference research has focused on traits people desire in partners (i.e., dealmakers) rather than what traits they avoid (i.e., dealbreakers), but mate preferences calibrate to both maximize benefits and minimize costs. Across six studies (N > 6,500), we identified and examined relationship dealbreakers, and how they function across relationship contexts. Dealbreakers were associated with undesirable personality traits; unhealthy lifestyles in sexual, romantic, and friendship contexts; and divergent mating strategies in sexual and romantic contexts. Dealbreakers were stronger in long-term (vs. short-term) relationship contexts, and stronger in women (vs. men) in short-term contexts. People with higher mate value reported more dealbreakers; people with less-restricted mating strategies reported fewer dealbreakers. Consistent with prospect and error management theories, people weighed dealbreakers more negatively than they weighed dealmakers positively; this effect was stronger for women (vs. men) and people in committed relationships. These findings support adaptive attentional biases in human social cognition.