The Relationship Between Men's Sociosexuality, Drinking Intake, and Blackouts.

Background: Sociosexuality-attitudes, behaviors, and desires related to casual sex-partly predicts drinking behavior in both men and women because drinking is thought to facilitate interactions that lead to casual sex. It follows that sociosexuality would predict drinking intake (e.g., quantity consumed)-but perhaps not drinking consequences (e.g., blacking out)-on the premise that drinking large quantities with high frequency (but not to such high degrees/levels of intoxication that negative consequences occur) would facilitate casual sex. Objectives: This set of studies evaluated whether baseline measures of sociosexuality predict drinking intake (i.e., frequency, quantity, and binge drinking) but not experiencing blacking out at follow-up in two samples (Study 1, N = 172; Study 2, N = 1,038) of college-aged men. Results: As predicted, men's sociosexuality prospectively predicted drinking frequency, quantity, and binge drinking. Contrary to our predictions, men's sociosexuality also predicted blacking out. Conclusions: College men's drinking interventions should be tailored to high-risk groups and consider individual differences like sociosexuality.

Women's Alcohol Sensitivity Predicts Alcohol-Related Regretted Sex.

BACKGROUND: Low sensitivity (LS) to alcohol's acute effects is a known risk factor for heavy drinking and its negative consequences. However, LS could be protective due to LS drinkers being less impaired at a given level of consumption. Here, we tested whether LS is associated with differences in men's and women's reports of alcohol-related regretted sex. METHODS: Eight hundred and one young adults (393 women) aged 21 to 35 (M = 23.11 years) recruited for a study of alcohol's effects on cognition completed self-report measures of alcohol sensitivity, typical alcohol use, and alcohol consequences (including regretted sex). RESULTS: Participants whose alcohol sensitivity scores classified them as LS were more likely to experience alcohol-related regretted sex than were high-sensitivity (HS) participants. However, when controlling for typical alcohol use and experience of alcohol consequences in general, alcohol sensitivity was negatively associated with risk of alcohol-related regretted sex, but only among women. CONCLUSIONS: At a given level of consumption, and controlling for experience of alcohol consequences other than regretted sex, reduced sensitivity to certain effects of alcohol may be a protective factor for women against risk for alcohol-related regretted sexual situations. This study provides insight on the unique risks of drinking among LS and HS women.

Naturalistic substance use before/during MTurk research participation is associated with increased substance demand and craving.

Although crowdsourcing platforms are widely used in substance-use research, it is unclear what percentage of participants use substances at the time of participation and how this might affect data quality, behavioral outcomes, or decision making. We conducted a secondary analysis of data collected on MTurk for a two-session, within-subject experiment recruiting individuals who regularly use alcohol, cannabis, cigarettes, or opioids. We analyzed 527 observations collected across two sessions (Session 1: n = 303, Session 2: n = 224) on measures of substance use before (within 3 hr)/during participation, data quality, demand in hypothetical purchase tasks, delay discounting, and craving. Substance use before/during participation was common (35.7%). Some participants reported substance use before/during both (25.4%) or only one (20.1%) of the sessions. Between-subject analyses of the first session data revealed that participants who used substances before/during participation did not differ on quality measures yet were slower to complete the survey. Controlling for individual differences in demographic variables and typical substance use, using a substance before/during participation was associated with increased hypothetical consumption of substances when the substance was free (demand intensity) and higher craving for substances, but not delay discounting. Substance use before/during MTurk participation among individuals who regularly use substances is prevalent and may impact outcome measures or standardization across sessions in repeated measures designs. Several implications have emerged, including statistically or experimentally controlling for substance use occurring before/during participation, which could improve the validity and rigor of online substance use research, and should be considered a part of best practices. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Exploratory analysis of blood alcohol concentration-related technology use and drinking outcomes among young adults.

BACKGROUND: Mobile health (mHealth) technology use may reduce alcohol use and related negative consequences; however, little is known about its efficacy without prompting from researchers or pay-per-use. This exploratory analysis assessed relationships between mHealth technology use frequency and alcohol-use outcomes. METHODS: Young adults who drink heavily (N = 97, Mage = 23, 51% male, 64% non-Hispanic White, Mdrinks/week = 21) had the option to use three mHealth technologies (breathalyzer device/app, blood alcohol content estimator app, drink counting via text message) while drinking for 2 weeks. Relationships between alcohol-related outcomes and any, multiple, and specific mHealth technology use across study days and drinking days were evaluated via bivariate correlations and multiple regressions. RESULTS: Participants used one or more mHealth technologies on approximately 68% of drinking days (33% of field days), with multiple technologies used on 34% of drinking days. Bivariate correlations revealed that a higher percentage of study days with any mHealth technology use was related to higher mean weekly drinks. However, a higher percentage of drinking days with any mHealth technology use was related to lower mean weekly drinks, percent of heavy and high-intensity drinking days, and negative consequences. There were several significant, inverse correlations between alcohol variables and using the mHealth technologies that provided personalized feedback. Multiple regression analyses (holding sex and baseline alcohol variables constant) indicated that a higher percentage of drinking days with any mHealth technology use was related to lower mean weekly drinks and lower percentage of heavy drinking days. CONCLUSIONS: Using mHealth technologies to moderate drinking without direct prompting from the research team or per-use incentives was related to less overall alcohol use and heavy drinking. This indicates potential real-world engagement with mHealth apps to assist with in-the-moment drinking. Normalizing mHealth technology use during drinking could help curb the public health crisis around harmful alcohol use in young adult populations.

It's not just drinking, but where you drink: A daily diary study of drinking venue effects on sexual activity with new partners.

It is well established that young adults' drinking is positively associated with sexual activity with new partners. While pharmacologic effects of alcohol (e.g., impaired sexual decision-making) can contribute to sexual activity with new partners, the context in which alcohol is consumed may also be important. We tested the hypothesis that drinking venues such as parties and bars increase the likelihood of sexual activity with new partners beyond any pharmacological effects of drinking quantity. Participants were 427 first-year men (aged 18-19). They reported on their relationship status and sociosexuality (i.e., attitudes/behaviors related to casual sex) at baseline and completed daily diary reports of drinking events (including number of drinks and venue) and sexual activity with new or previous partners over the span of 56 days. Drinking events at parties/bars (but not at home) increased the odds of sexual activity in the next four hours with new partners (but not with previous partners), even after controlling for the number of drinks consumed. Parties/bars are an integral part of facilitating sexual activity with new partners, and have effects independent of pharmacological alcohol effects, which has implications for reducing alcohol-related risky sexual activity. Interventions should not only target alcohol consumption, but where consumption takes place.

The sex premium in religiously motivated moral judgment.

Recent theorizing suggests that religious people's moral convictions are quite strategic (albeit unconsciously so), designed to make their worlds more amenable to their favored approaches to solving life's basic challenges. In a meta-analysis of 5 experiments and a preregistered replication, we find that religious identity places a sex premium on moral judgments, causing people to judge violations of conventional sexual morality as particularly objectionable. The sex premium is especially strong among highly religious people, and applies to both legal and illegal acts. Religion's influence on moral reasoning emphasizes conventional sexual norms, and may reflect the strategic projects to which religion has been applied throughout history. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

Sociosexuality and Sex With New Partners: Indirect Effects Via Drinking at Parties and Bars.

OBJECTIVE: The desire for many novel, concurrent, uncommitted sex partners (i.e., unrestricted sociosexuality) may encourage individuals to seek out contexts that facilitate casual sex. We tested a model in which the effects of sociosexuality on sex with new partners were mediated via drinking in specific contexts. We hypothesized that drinking at parties and bars, which are known to facilitate casual sex (but not drinking at home), would contribute to sex with new (but not with previous) partners. METHOD: Participants were 427 male freshmen from a large, public northeastern university. They completed a baseline survey in their first semester followed by 56 days of daily reports on drinking and sexual activity during their second semester. RESULTS: As predicted, sociosexuality measured at baseline positively predicted occasions of sex with a new partner, but not sex with a previous partner. In support of the model, effects were partially mediated by frequency of drinking at parties and bars across the 56-day reporting period, but not by drinking at home. CONCLUSIONS: Previous research has demonstrated associations among sociosexuality, drinking, and casual sex. Our study is unique in suggesting that drinking in specific contexts--that is, drinking at parties and bars, but not drinking at home--partially mediates the effects of sociosexuality on sex with new partners. This pathway suggests that men with a desire for many novel, concurrent, uncommitted sex partners seek out drinking contexts as a way of facilitating these encounters.

Are women more likely to wear red and pink at peak fertility? What about on cold days? Conceptual, close, and extended replications with novel clothing colour measures.

Evolutionarily minded researchers have hypothesized that women advertise their ovulatory status by wearing red or pink clothing on relatively cold days. Many of these studies have been based on samples of women who have self-reported their clothing choices, a practice that raises questions about accuracy. In two studies, we evaluated the relationship between women's fertility and their clothing choices using four methods for measuring clothing colour: self-reports; trained raters' judgements of garment coloration in outfits that women drew onto mannequins to represent what they would wear to a party with single attractive people in attendance; automated colour coding of the mannequins; and trained raters' judgements of garment coloration as evinced in photographs that women took of themselves. Using these four measures of clothing choice along with measures of women's fertility and outside temperature, we did not find compelling evidence that women are particularly inclined to wear red or pink during peak fertility, even on relatively cold days.

Frequency of Recent Binge Drinking Is Associated With Sex-Specific Cognitive Deficits: Evidence for Condition-Dependent Trait Expression in Humans.

Evolutionary theory suggests that commonly found sex differences are largest in healthy populations and smaller in populations that have been exposed to stressors. We tested this idea in the context of men's typical advantage (vs. women) in visuospatial abilities (e.g., mental rotation) and women's typical advantage (vs. men) in social-cognitive (e.g., facial-expression decoding) abilities, as related to frequent binge drinking. Four hundred nineteen undergraduates classified as frequent or infrequent binge drinkers were assessed in these domains. Trial-level multilevel models were used to test a priori Sex × Group (binge drinking) interactions for visuospatial and social-cognitive tasks. Among infrequent binge drinkers, men's typical advantage in visuospatial abilities and women's typical advantage in social-cognitive abilities was confirmed. Among frequent binge drinkers, men's advantage was reduced for one visuospatial task (Δ d = 0.29) and eliminated for another (Δ d = 0.75), and women's advantage on the social-cognitive task was eliminated (Δ d = 0.12). Males who frequently engaged in extreme binges had exaggerated deficits on one of the visuospatial tasks, as did their female counterparts on the social-cognitive task. The results suggest sex-specific vulnerabilities associated with recent, frequent binge drinking, and support an evolutionary approach to the study of these vulnerabilities.

Sociosexuality predicts drinking frequency among first-year college women.

The first semester of college is marked by increases in both heavy episodic drinking and sexual activity, including hookups. Because drinking and casual sex are highly related and college students believe that drinking settings facilitate hookups, students may drink as a way of facilitating uncommitted sexual partnerships. In 2 samples of college freshman women, we considered whether sociosexuality, a personality trait reflecting interest in casual, uncommitted sexual partnerships, prospectively predicted frequency of drinking. In Study 1 (N = 142), sociosexuality, assessed early in the first semester of college, positively predicted frequency of drinking occasions at the end of the semester after controlling for initial drinking frequency. In Study 2 (N = 654), sociosexuality again predicted frequency of drinking occasions after controlling for initial drinking frequency. Expected hookups with alcohol, but not expected hookups without alcohol, also predicted frequency of heavy episodic drinking occasions. Findings suggest that drinking frequency among college freshman women may reflect, at least in part, their interest in uncommitted sexual encounters. Because freshman women face a disproportionate risk of sexual assault relative to older students and drinking and sexual activity serve as significant risk factors, these findings have particular relevance for sexual assault prevention efforts. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Examining the Roles of Heavy Episodic Drinking, Drinking Venues, and Sociosexuality in College Men's Sexual Aggression.

OBJECTIVE: College men's alcohol consumption is positively associated with sexual aggression perpetration, yet men's drinking does not typically predict later sexual assault after accounting for risk factors, such as impersonal sexuality. In the present study, we tested an indirect effects model whereby college men's impersonal sex orientation and heavy episodic drinking (HED) were hypothesized to contribute to sexual aggression perpetration via more frequent attendance at drinking venues (parties, bars). METHOD: Freshman males (N = 1,043) were recruited to participate in a five-semester study. Key measures included the Sociosexuality Index as a measure of impersonal sex attitudes and behaviors, frequency of HED, and frequency of attending drinking venues (parties, bars). The dichotomous outcome measure was based on the Sexual Strategies Survey, a measure of tactics used to convince a female partner to have sex. Structural equation modeling was used to examine whether sociosexuality attitudes, sociosexuality behaviors, and HED (all measured at Wave 1) would have direct and indirect effects on use of Wave 5 sexual aggression tactics, through effects on Wave 3 venue attendance. RESULTS: The model supported the hypothesized indirect effects of sociosexuality and HED via men's subsequent drinking venue attendance and was preferred over alternative models. CONCLUSIONS: College men who more frequently attended drinking "hot spots" were more likely to perpetrate subsequent sexual aggression, supporting a growing body of evidence on the importance of drinking venues in college sexual assault. Findings also help to explicate the mechanism underlying the robust role of impersonal sex orientation in sexual aggression.

Operational Sex Ratio Predicts Binge Drinking Across U.S. Counties.

Previous research suggests that binge drinking among young men serves as a "costly signal" to potential mates, such that the binge drinker is capable of bearing the harmful consequences of alcohol consumption. Here, we propose that binge drinking among young adults is conditionally dependent upon the signaler's willingness to take risks, which is influenced by the local operational sex ratio (OSR). Using archived binge drinking estimates from 2009 to 2012 and Census Bureau records of OSRs, we tested the relationship between OSR and binge drinking rates at the county level across 3,143 U.S. counties against hypotheses drawn from evolutionary theory. Results from our mixed-effects models revealed that a higher overall OSR (i.e., more eligible men compared to women) was associated with higher male binge drinking rates but lower female binge drinking rates. A higher OSR particularly in the 20-29 and 50+ age groups predicted higher male binge drinking rates but lower female binge drinking rates. Our findings generally support predictions derived from evolutionary theory and suggest that binge drinking may function as a costly sexual signal, conditionally regulated by age and the local sex ratio.

Sexually selected sex differences in competitiveness explain sex differences in changes in drinking game participation.

Drinking games are a risk factor for behavioral and health problems among university students. Previous cross-sectional research by Hone, Carter, and McCullough (2013) replicated well-established sex differences in drinking game behaviors (i.e., that men are more active drinking game participants than are women) and university drinking problems more generally. Hone et al. (2013) also found that these male-specific behavioral patterns are attributable in part to the fact that men's generally unrestricted sexual strategies, plus their social competitiveness, motivate them to participate in drinking games to display their fortitude and compete with same-sex rivals. Here, the authors conducted a study to evaluate with greater causal rigor whether sex differences in sexual restrictedness and social competitiveness-and sex differences in motivations for participating in drinking games in particular-are partially responsible for the sex differences in university students' drinking game behaviors and drinking problems. Sex differences in changes in frequency of drinking game participation were partially mediated by competitive motivations for participating in drinking games and by the effects of social competitiveness on competitive drinking game motivation. These findings lend additional support to the proposition that participation in drinking games is motivated in part by their suitability as a venue for sexual competition in university students' day-to-day lives.

Sex differences in preferences for humor: a replication, modification, and extension.

Evolutionary-minded scientists have proposed that humor is a sexually selected trait in men that signals mate quality. Indeed, women tend to prefer men who make them laugh and men tend to prefer women who laugh at their jokes. However, it is unclear how robust this pattern is. Here we report a replication of one of the first studies (Bressler, Martin, and Balshine, 2006) to examine the sex differences in preferences for humor receptivity versus humor production. We replicate Bressler et al.'s (2006) findings that men prefer women who are receptive to their humor whereas women prefer men who produce humor. These findings held even after we modified Bressler et al.'s questionnaire for better conceptual validity. Furthermore, using a separate measure designed to assess trade-offs, we found that men viewed humor receptivity as a necessity and humor production as a luxury when they were asked to create an ideal long-term partner. For women, it was just the opposite. These results bolster the claim that sexual selection has shaped sex differences regarding preferences for a prospective mate's sense of humor and that what one means by "sense of humor" can vary.

Drinking games as a venue for sexual competition.

Based on sexual selection theory, we hypothesized that sex differences in mating effort and social competitiveness-and subsequent sex differences in sexual and competitive motivations for participating in drinking games-are responsible for the well-documented sex differences in college students' drinking game behaviors. Participants in a cross-sectional study were 351 women and 336 men aged 17 to 26. In a mediation model, we tested sex differences in mating effort, social competitiveness, sexual and competitive motivations for participating in drinking games, drinking game behaviors, and alcohol-related problems. Men participated in drinking games more frequently, consumed more alcohol while participating in drinking games, and experienced more problems associated with drinking. These sex differences appeared to be partially mediated by mating effort, social competitiveness, and sexual and competitive motivations for participating in drinking games. Drinking games are a major venue in which college students engage in heavy episodic drinking, which is a risk factor for college students' behavioral and health problems. Thus, the functional perspective we used to analyze them here may help to inform public health and university interventions and enable better identification of at-risk students.

The importance of physical strength to human males.

Fighting ability, although recognized as fundamental to intrasexual competition in many nonhuman species, has received little attention as an explanatory variable in the social sciences. Multiple lines of evidence from archaeology, criminology, anthropology, physiology, and psychology suggest that fighting ability was a crucial aspect of intrasexual competition for ancestral human males, and this has contributed to the evolution of numerous physical and psychological sex differences. Because fighting ability was relevant to many domains of interaction, male psychology should have evolved such that a man's attitudes and behavioral responses are calibrated according to his formidability. Data are reviewed showing that better fighters feel entitled to better outcomes, set lower thresholds for anger/aggression, have self-favoring political attitudes, and believe more in the utility of warfare. New data are presented showing that among Hollywood actors, those selected for their physical strength (i.e., action stars) are more likely to believe in the utility of warfare.