Melbourne School of Psychological Sciences - Research Publications
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ItemHeightened male aggression toward sexualized women following romantic rejection: The mediating role of sex goal activation(WILEY, 2018-01)Research from a variety of disciplines suggests a positive relationship between Western cultural sexualization and women's likelihood of suffering harm. In the current experiment, 157 young men were romantically rejected by a sexualized or non-sexualized woman then given the opportunity to blast the woman with loud bursts of white noise. We tested whether the activation of sexual goals in men would mediate the relationship between sexualization and aggressive behavior after romantic rejection. We also tested whether behaving aggressively toward a woman after romantic rejection would increase men's feelings of sexual dominance. Results showed that interacting with a sexualized woman increased men's sex goals. Heightened sex goal activation, in turn, predicted increased aggression after romantic rejection. This result remained significant despite controlling for the effects of trait aggressiveness and negative affect. The findings suggest that heightened sex goal activation may lead men to perpetrate aggression against sexualized women who reject them.
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ItemNo compelling positive association between ovarian hormones and wearing red clothing when using multinomial analyses(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2017-04)Several studies report that wearing red clothing enhances women's attractiveness and signals sexual proceptivity to men. The associated hypothesis that women will choose to wear red clothing when fertility is highest, however, has received mixed support from empirical studies. One possible cause of these mixed findings may be methodological. The current study aimed to replicate recent findings suggesting a positive association between hormonal profiles associated with high fertility (high estradiol to progesterone ratios) and the likelihood of wearing red. We compared the effect of the estradiol to progesterone ratio on the probability of wearing: red versus non-red (binary logistic regression); red versus neutral, black, blue, green, orange, multi-color, and gray (multinomial logistic regression); and each of these same colors in separate binary models (e.g., green versus non-green). Red versus non-red analyses showed a positive trend between a high estradiol to progesterone ratio and wearing red, but the effect only arose for younger women and was not robust across samples. We found no compelling evidence for ovarian hormones increasing the probability of wearing red in the other analyses. However, we did find that the probability of wearing neutral was positively associated with the estradiol to progesterone ratio, though the effect did not reach conventional levels of statistical significance. Findings suggest that although ovarian hormones may affect younger women's preference for red clothing under some conditions, the effect is not robust when differentiating amongst other colors of clothing. In addition, the effect of ovarian hormones on clothing color preference may not be specific to the color red.
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ItemRelationship Quality and Cognitive Reappraisal Moderate the Effects of Negative Urgency on Behavioral Inclinations Toward Aggression and Intimate Partner Violence(American Psychological Association, 2018-03-01)Objective: Intimate partner violence refers to verbal and physical aggression occurring between people who are, or were formerly, in an intimate relationship. Using the I3 model framework, we examined the interactive influences of negative urgency (i.e., the tendency to act rashly when in a bad mood), relationship quality, and cognitive reappraisal on hostile vocalizations in response to simulated romantic jealousy. Method: We instructed 135 healthy male or female undergraduates in romantic relationships to use cognitive reappraisal or not. Participants then listened and verbally responded to jealousy-provoking dating scenarios while vocalizations were recorded. Results: Results indicated that cognitive reappraisal attenuated the positive association between negative urgency and aggressive vocalizations—but only for couples in high-quality relationships. Cognitive reappraisal also attenuated the negative association between relationship quality and vocalized negative affect in response to simulated romantic jealousy. Individual differences in negative urgency positively predicted vocalized negative affect and vocalized anger. Conclusions: Cognitive reappraisal may attenuate the effect of aggressive impellors on intimate partner violence but only when relationship quality is high. When relationship quality is low, cognitive reappraisal may not be effective.
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ItemSkin-transmitted pathogens and the heebie jeebies: evidence for a subclass of disgust stimuli that evoke a qualitatively unique emotional response(ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD, 2017)Skin-transmitted pathogens have threatened humans since ancient times. We investigated whether skin-transmitted pathogens were a subclass of disgust stimuli that evoked an emotional response that was related to, but distinct from, disgust and fear. We labelled this response "the heebie jeebies". In Study 1, coding of 76 participants' experiences of disgust, fear, and the heebie jeebies showed that the heebie jeebies was elicited by unique stimuli which produced skin-crawling sensations and an urge to protect the skin. In Experiment 2,350 participants' responses to skin-transmitted pathogen, fear-inducing, and disgust-inducing vignettes showed that the vignettes elicited sensations and urges which loaded onto heebie jeebies, fear, and disgust factors, respectively. Experiment 3 largely replicated findings from Experiment 2 using video stimuli (178 participants). Results are consistent with the notion that skin-transmitted pathogens are a subclass of disgust stimuli which motivate behaviours that are functionally consistent with disgust yet qualitatively distinct.
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ItemContexts for men’s aggression against men(Springer, 2018-09-10)This comprehensive, ten volume reference work reflects the interdisciplinary influences on evolutionary psychology and serves as a major resource for its history, scientific contributors and theories.
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ItemIncome inequality not gender inequality positively covaries with female sexualization on social media(NATL ACAD SCIENCES, 2018-08-28)Publicly displayed, sexualized depictions of women have proliferated, enabled by new communication technologies, including the internet and mobile devices. These depictions are often claimed to be outcomes of a culture of gender inequality and female oppression, but, paradoxically, recent rises in sexualization are most notable in societies that have made strong progress toward gender parity. Few empirical tests of the relation between gender inequality and sexualization exist, and there are even fewer tests of alternative hypotheses. We examined aggregate patterns in 68,562 sexualized self-portrait photographs ("sexy selfies") shared publicly on Twitter and Instagram and their association with city-, county-, and cross-national indicators of gender inequality. We then investigated the association between sexy-selfie prevalence and income inequality, positing that sexualization-a marker of high female competition-is greater in environments in which incomes are unequal and people are preoccupied with relative social standing. Among 5,567 US cities and 1,622 US counties, areas with relatively more sexy selfies were more economically unequal but not more gender oppressive. A complementary pattern emerged cross-nationally (113 nations): Income inequality positively covaried with sexy-selfie prevalence, particularly within more developed nations. To externally validate our findings, we investigated and confirmed that economically unequal (but not gender-oppressive) areas in the United States also had greater aggregate sales in goods and services related to female physical appearance enhancement (beauty salons and women's clothing). Here, we provide an empirical understanding of what female sexualization reflects in societies and why it proliferates.
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ItemResolving speculations of methodological inadequacies in the standardized protocol for characterizing women's fertility: Comment on Lobmaier and Bachofner (2018)(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2018-11)Lobmaier and Bachofner (2018) suggest a series of methodological practices to increase the accuracy and reliability of determining a woman's fertile window, claiming the standardized protocol for characterizing women's fertility by Blake et al. (2016) is inadequate. These practices include observing participants for purportedly fertile sessions a considerable time before the LH surge, and using salivary ferning and cervical mucus evaluation as real-time measures of current fertility. Here I explain that Lobmaier and Bachofner's (2018) recommendations decrease rather than increase the likelihood of observing women during peak fertility. I also summarize the pertinent literature on salivary ferning and cervical mucus evaluations, showing that neither method has sufficient sensitivity and specificity to characterize peak fertility. Using meta-analytic data of 10K menstrual cycles, I then show that the protocol provided by Blake et al. (2016) recruits women when conception probability is at its peak and is statistically higher than the window recommended by Lobmaier and Bachofner (2018).
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ItemWho suppresses female sexuality? An examination of support for Islamic veiling in a secular Muslim democracy as a function of sex and offspring sex(ELSEVIER SCIENCE INC, 2018-11-01)Whether it is men or women who suppress female sexuality has important implications for understanding gendered relations, ultimately providing insight into one widespread cause of female disadvantage. The question of which sex suppresses female sexuality more avidly, however, neglects that our interests are never unambiguously masculine or feminine; each of us has a combination of male and female kin which alters how much of our future fitness derive from each sex. Here we exploit a nationally representative sample of 600 Tunisians to test whether support for Islamic veiling—a proxy for female sexual suppression—is more common amongst one sex than the other, and is affected by the relative sex of one's offspring (i.e., the number of sons relative to daughters). We find that men are more supportive of Islamic veiling than women, but women with more sons are more supportive of veiling and more likely to wear veils than women with fewer sons. All effects were robust to the inclusion of religiosity, which was weaker amongst men and unrelated to the number of sons a woman had. The number of daughters affected neither religiosity nor support for veiling, but did increase women's likelihood of wearing contemporary, fashionable Tunisian veils compared with no head covering. We further found that men were more religious if they had more sons. Overall, these findings highlight that far from being the fixed strategy of one sex or the other, female sexual suppression manifests facultatively to promote one's reproductive interests directly or indirectly by creating conditions beneficial to one's descendent kin. These results show that both men and women can suppress female sexuality, although the function in either case appears more closely aligned with male rather than female interests.
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ItemIncome inequality and its implications for gendered conflict(Springer Nature, 2019)We argue that inequality plays such an important role in shaping human behavior because of the strong effects it exerts on individual reproductive success and thus evolutionary fitness. Here we examine evidence of the relationship between economic inequality and reproductive incentives in men and women. Inequality has been shown to increase men’s competition for status and respect, particularly among men who are younger and poorer. This competition is an important explanatory variable in rates of accidental death, addiction, violence, and property crime. We then focus on parallel links in women, summarizing evidence that high economic inequality increases women’s investment of time and attention on competitive reproductive pursuits (such as improving physical and sexual attractiveness). We suggest that these behaviors are due to proximate desires to socially signal and socially climb, and may also reflect a concern with external approval. We show that these proximate mechanisms can be interpreted in terms of the ultimate function of achieving greater reproductive success via enhanced status, safety, and material well-being in economically unequal environments.