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The sexual imagination hypothesis predicts that gender differences in jealousy emerge from the differences in explicit imagination between men and women. In particular, men strongly respond to partners' sexual infidelity because they can imagine sexual stimuli explicitly. In contrast, women strongly respond to emotional infidelity because they can effortlessly envision emotional infidelity. We hypothesised that higher sexual and romantic imaginations were associated with greater distress over partners' sexual and emotional infidelity, respectively. Participants (226 women and 135 men) answered questions regarding experiences with personal sexual and emotional infidelity and the degree of distress they felt over their partners' sexual and emotional infidelity. They completed the scales for sexual and romantic imaginations. Multiple regression analyses showed that the sexual imagination hypothesis provided a unique explanation for gender differences in jealousy beyond the effects of gender, including relationship experience and experiences with personal sexual and emotional infidelity. Additionally, individuals with relationship experience and experiences with personal sexual and emotional infidelity reported higher sexual and romantic imaginations than those without such experiences. Furthermore, our findings imply that responses to partners' infidelity, considering gender, are more similar than different. [ABSTRACT FROM AUTHOR]

In recent years, researchers have discussed the introduction of an evolutionary perspective into public health and health behavior research. We aimed to examine the effects of messages that target the fundamental human motive of kin care on HPV vaccination recommendations among mothers with daughters, based on an evolutionary theoretical approach. This study consisted of a three-arm parallel-group single-blinded randomized controlled study. A web-based survey was conducted from 7 to 8 October 2021 in Japan. Mothers with daughters (n = 969) were randomly assigned either to a group that received an intervention message that targeted the fundamental motive of kin care, or that targeted the fundamental motive of disease avoidance, or a control message. Intention to have daughter(s) receive HPV vaccination was assessed both before and right after reading the messages. A one-way ANOVA with Tukey's or Games–Howell test was conducted. An intervention message targeting the fundamental motive of kin care and disease avoidance significantly increased intention of vaccination versus a control message (p < 0.001, respectively). There was no significant difference between the two intervention groups. The evolutionary theoretical approach that focuses on fundamental human motives may have the potential to extend the communication strategy for HPV vaccination recommendations. Health professionals may be recommended to deliver messages that target the fundamental motive of kin care as well as messages about the susceptibility and severity of cervical cancer and vaccine efficacy (e.g., "Getting cervical cancer can prevent childbirth. To protect your daughter and your future grandchildren, get your daughter vaccinated against HPV"). However, the present study only evaluated HPV vaccination intentions in Japanese mothers with daughters. Future studies should evaluate vaccination behavior in a wider range of subjects to confirm that the evolutionary theoretical approach promotes HPV vaccination. [ABSTRACT FROM AUTHOR]

Previous research in evolutionary psychology has highlighted the potential role of facial structures in explaining human behavior. The facial width-to-height ratio (fWHR) was found to be associated with testosterone-driven behavioral tendencies like achievement drive, aggression, and sporting success. The current study aimed to replicate such relationships using real-world data (i.e., professional basketball players; N = 482). Achievement drive, aggression, and sporting success were operationalized as field-goal attempts (FGA), the number of fouls committed (Foul), and player performance rating (EFF), respectively. The results indicated that fWHR was significantly associated with FGA and EFF, controlling for minutes of play and body-mass-index. The same results were obtained for separate analyses focusing on outsider players. However, analyses of inside players demonstrated that fWHR was associated only with EFF. The current research further provides empirical evidence supporting the effects of fWHR on achievement drive and sporting successes, although the effect sizes are notably small. [ABSTRACT FROM AUTHOR]

Purpose: The aim of this paper is to outline an innovative multilevel conceptual model capable of explaining "karoshi" (death from overwork) and its relationship to molecular-, micro-, meso- and macro-competitive productivity (CP). Design/methodology/approach: A theoretical model, grounded in the evolutionary biological, psychological, organizational and sociological literatures, is provided. Findings: Karoshi is a function of molecular (genetic), micro (individual), meso (organizational) and macro (cultural) evolutionary forces. It is also demonstrated to be a function of time, geography, agri-climate and cultural and ethnic homogeneity. Research limitations/implications: The analysis is purely theoretical and its theoretically informed hypotheses are not tested empirically. As such, further data-driven research is indicated. Additional analyses are also needed to further unpack the recursive nature of the relationship between karoshi and CP and the subtle differences between genetic evolution and cultural and organizational evolution. Practical implications: Karoshi-related deaths are a public health epidemic and increasingly a major obstacle to sustainable CP. As such, organizations can leverage these analyses to help them implement interventions aimed at reducing incidents of work-related deaths, not only in Japan, but across the world. Originality/value: This multilevel conceptual framework makes a unique contribution to the cross-cultural and strategic management literatures. More specifically, it constitutes a new and innovative contribution to one's current understanding of CP by uniquely integrating biology, psychology, organization studies and cultural studies into one overarching model. [ABSTRACT FROM AUTHOR]

Takasuna (Integr. Physiol. Behav. Sci. 41, ) mentioned the ease with which evolutionary theory was accepted by Japanese psychologists, and certainly this is admirable. He also mentioned the stubborn force which had to be used to gain an understanding of the (thoroughly Western) subjective–objective distinction. Alas, during the formative years of Japanese psychology, there was much philosophical work afoot attempting to destroy that distinction. It is speculated that only a small change of which books were translated, or with which Americans early Japanese psychologists trained under, would have made Japan into a haven for these still underdog theories. [ABSTRACT FROM AUTHOR]

What are the benefits of negative thinking and negative affect? Although previous studies in evolutionary psychology, social psychology, and clinical psychology have clarified the question, there has been no definitive study asking people directly about the perceived benefits. In the present study, 119 Japanese undergraduates were asked how they recognized the benefits of negative thinking and negative affect. Their answers were analyzed qualitatively. The answers were arranged into 30 smaller categories and 12 superordinate ones. The benefits were divided into ‘benefits to the self’ and ‘benefits to interpersonal relations.’ Finally, the conditions necessary for the negative thinking and negative affect being benign, and possible cultural differences, were discussed. [ABSTRACT FROM AUTHOR]