Sex Differences In Jealousy Research Articles

Jealousy as Predicted by Allocation and Reception of Resources in an Economic Game.

Evidence is abundant that evolution by selection has produced sex differences in the design of adaptations to solve the problems surrounding reproduction. A prime example is the design of human jealousy, which research suggests is triggered by distinct evoking acts that are specific challenges for women and men in their exclusive reproductive bond. It follows that jealousy would be directed toward driving away interlopers who could potentially threaten the bond with the romantic partner or increase mate retention efforts in response to sex-specific threats. To explore this possibility, we use as a methodological innovation an economic game for the evocation of jealousy. With a modified dictator game, we showed men and women in a committed relationship, conditions in which the partner or an intrasexual rival allocates money to (investing condition), or obtains money from (receiving condition), the partner or an opposite sex third party that they recently met. A sample of 56 heterosexual couples (n = 112) participated in a laboratory setting. Our results show the different scenarios of this dictator game exerted the expected evocation of jealousy (controlling individual differences), with women being more jealous by the partner's allocation of resources to a rival, and men reporting slightly more jealousy by their partner receiving money from a rival. We discuss the implications of this method to advance the comprehension of the adaptive function of sex differences in jealousy, the use of economic games, and possible modifications to improve the similarity of the game to a real assessment of actual male jealousy.

Relationship status and gender-related differences in response to infidelity.

The sexual imagination hypothesis suggests that responses to a partner's infidelity emerge from the sociocultural factors that affect individuals' imagining of that occurrence irrespective of biological sex, including relationship status (i.e., the experience of a serious, committed relationship). Nevertheless, evolutionary psychological perspectives predict that responses to a partner's infidelity emerge from a sex-specific evolved innate mechanism. A lower 2D:4D digit ratio is associated with more robust responses to a partner's sexual infidelity. In this study, participants (660 males and 912 females) were requested to measure finger lengths, reactions to their partners' sexual and emotional infidelity, and relationship status. A logistic regression and multiple regression analyses revealed that relationship status was uniquely associated with responses to a partner's sexual and emotional infidelity beyond the effects of sex and 2D:4D. Those in committed relationships were more upset or distressed over their partners' infidelity, particularly over sexual infidelity, than those not in committed relationships. The results supported the sexual imagination hypothesis indirectly, while evolutionary psychological perspectives were met with skepticism. Our findings implied that sex differences in jealousy result from relationship status, and that responses to partners' infidelity are more alike than different.

Sex differences in jealousy and personality differences: Comparing consensually non-monogamous participants to a monogamous cohort

AbstractSex differences in jealousy are a well-established research finding that suggests men (relative to women) will find the sexual components of an infidelity more distressing, whereas women (relative to men) will find the emotional components of an infidelity more distressing. This study uses a relatively novel sample of participants (individuals who engage in consensual non-monogamy) to test both cultural and evolutionary influences on jealousy. In our study using hypothetical scenarios, we found that men (relative to women) were more upset about the sexual components of the infidelity and that women (relative to men) were more upset about the emotional components of the infidelity. This occurred in both samples to the same magnitude suggesting that the differences between the men and women may be driven by evolutionary influences. Additionally, we found a main effect of relationship type such that participants who engaged in consensual non-monogamy had lower levels of jealousy overall. As such, this study provides relatively unique evidence for the ultimate origins of sex differences in jealousy.

Romantická žárlivost u heterosexuálních a homosexuálních jedinců z pohledu evoluční psychologie

Jealousy is defined as one of the most common automatic responses to endangering a relationship by a third party, and in evolutionary psychology it has the function of maximizing self-reproduction fitness, ensuring paternity security in men, and maintaining partner's resources in women. These include romantic jealousy, in men assuring certainty of paternity, and in women assuring the maintenance of partner's resources. Thus, according to this logic, a woman’s sexual infidelity should be more threatening for men and a man’s emotional infidelity (emotional involvement with other women than a primary partner) should be more threatening for women. Many previous studies confirm the existence of sex differences in jealousy; men reporting a higher level of sexual jealousy and women reporting a higher level of emotional jealousy. On the contrary, studies of romantic jealousy in homosexual individuals show inconsistent results. Some studies suggest that the type of sexual and emotional jealousy does not depend on the sex of the individual who is jealous, but rather on the sex of the partner or the sex of the rival. Therefore, the aim of this review is to introduce romantic jealousy from an evolutionary perspective and to acquaint the reader with current knowledge of the study of cognitive, emotional and behavioral aspects of romantic jealousy in heterosexual and homosexual men and women.

Gender, sexual orientation and type of relationship influence individual differences in jealousy: A large Brazilian sample

Jealousy is supposed to secure the relationship against a third party. Both partners face significant potential costs in case of the partner desertion caused by an extra-pair liaison. However, studies systematically find higher emotional and overall jealousy among women. Interestingly, sex differences in jealousy do not appear among non-heterosexual or consensually non-monogamous (CNM) individuals. We aimed to investigate effect of gender, sexual orientation and type of relationship on several measures of jealousy. A large Brazilian sample of 5,230 men and women (Mage = 28.3) responded to demographic questions, relationship status and type, Reactive Jealousy Scale, Sexual Jealousy Scale, Self-reported Jealousy, and the Kinsey Scale of Sexual Orientation. Participants were classified as singles (N = 2,253, 43%), those in monogamous (N = 2,578, 49%) and CNM relationships (N = 400, 8%). Women reported higher overall and emotional jealousy than men, but these sex differences did not apply to non-heterosexuals or CNM individuals. CNM individuals reported lower overall and sexual jealousy. This supports the notion that specific individual (e.g., gender, sexual orientation) and social (e.g., relationship status and type) factors influence the psychological trait of jealousy.

Infidelity-Revealing Snapchat Messages Arouse Different Levels of Jealousy Depending on Sex, Type of Message and Identity of the Opposite Sex Rival

Research highlighting sex-differentiated jealousy resulting from imagined scenarios has now been reaffirmed when the infidelity-revealing message is discovered on a social media platform. Participants in the current study were presented with both sexually and emotionally charged infidelity-revealing scenarios featuring a same-sex sibling, a friend and a stranger in the format of a ‘Snapchat’ message. Men indicated significantly higher jealousy to sexual as opposed to emotional messages with the reverse pattern evident in women. Sex differences were also evident in the extent of jealousy elicited by ‘third-party’ identity. Women were significantly more jealous when the imagined infidelity occurred between their sister compared to both a best friend and a stranger with males showing significantly lower jealousy directed towards their brother compared to a stranger. These findings are supportive not only of a parental investment (PI) interpretation of sex differences in jealousy but also an interpretation consistent with aspects of inclusive fitness theory.

Sexual and Emotional Infidelity: Evolved Gender Differences in Jealousy Prove Robust and Replicable

Infidelity poses threats to high-investment mating relationships. Because of gender differences in some aspects of reproductive biology, such as internal female fertilization, the nature of these threats differs for men and women. Men, but not women, for example, have recurrently faced the problem of uncertainty in their genetic parenthood. Jealousy is an emotion hypothesized to have evolved to combat these threats. The 1992 article Sex Differences in Jealousy: Evolution, Physiology, and Psychology reported three empirical studies using two different methods, forced-choice and physiological experiments. Results supported the evolution-based hypotheses. The article became highly cited for several reasons. It elevated the status of jealousy as an important emotion to be explained by any comprehensive theory of human emotions. Subsequent meta-analyses robustly supported the evolutionary hypotheses. Moreover, the work supported the evolutionary meta-theory of gender differences, which posits differences only in domains in which the sexes have recurrently faced distinct adaptive problems. It also heralded the newly emerging field of evolutionary psychology as a useful perspective that possesses the scientific virtues of testability, falsifiability, and heuristic value in discovering previously unknown psychological phenomena.

Sex differences in jealousy: the (lack of) influence of researcher theoretical perspective

ABSTRACTThe sex difference in jealousy is an effect that has generated significant controversy in the academic literature (resulting in two meta-analyses that reached different conclusions on the presence or absence of the effect). In this study, we had a team of researchers from different theoretical perspectives use identical protocols to test whether the sex difference in jealousy would occur across many different samples (while testing whether mate value would moderate the effect). In our samples, we found the sex difference in jealousy to occur using both forced choice and continuous measures, this effect appeared in several different settings, and, we found that mate value moderated participant responses. The results are discussed in light of the controversy surrounding the presence of the effect.

Jealousy Levels in Response to Infidelity-Revealing Facebook Messages Depend on Sex, Type of Message and Message Composer: Support for the Evolutionary Psychological Perspective

Sex differences in how and to what extent jealousy manifests have long been documented by evolutionary psychologists with males showing more pronounced responses to sexual infidelity and females to emotional infidelity. With modern technology facilitating the opportunity for extra-pair relations and the means by which inclinations towards infidelity can be monitored, social media is a fertile ground to test hypotheses derived from evolutionarily informed theories. The current study presented male (n = 21) and female (n = 23) undergraduate participants with realistic, unambiguously sexual and emotional messages both sent and received that had been discovered (imagined) on their partner’s Facebook messenger. Distress scores in response to these messages were measured on a scale of 0–10. Broad support for the evolutionary interpretation of sex differences in jealousy was found with more pronounced sexual jealousy in males, and emotional jealousy in females compared to males being evident. Similarly, salient sex differences were observed highlighting the importance of the composer of the infidelity-revealing message. For example, in females, higher distress was found resulting from the discovery of received (female rival) when compared to sent (male partner) messages, and received messages across sex (females higher). The results are discussed in relation to previous findings and in the context of growing concern relating to relationship dissolution and partner-initiated domestic violence.

Affective Modification of the Startle Eyeblink Response During Sexual and Emotional Infidelity Scripts

The sex difference in jealousy has been demonstrated to occur in response to actual experiences with infidelity, continuous measures of jealousy, as well as cross-culturally. However, to date, the evidence for physiological correlates of jealousy has been limited and mixed. As such, the purpose of this study was to explore the sex difference in jealousy using multiple physiological measures of jealousy. In our study, we demonstrate that the sex difference in jealousy occurs using self-report measures of jealousy in addition to occurring with the affective modification of startle response (but not in response to facial electromyography (EMG), skin conductance, or heart rate). As such, this study demonstrates that the sex difference in jealousy is a replicable finding that occurs when using self-report measures of jealousy in addition to manifesting itself in physiological correlates.

Individual Differences in Preventive Jealousy Determine Men's Jealousy after Subliminal Exposure to Rivals Wearing High- or Low-Status Clothes.

This study investigated sex differences in jealousy after subliminal exposure to rivals wearing high-status or low-status clothes. It was expected that individual differences in preventive jealousy would moderate the relationship between a rival's characteristics and jealousy. Participants (Men: n = 54, M age = 21.6 yr., SD = 3.5; women: n = 71, M age = 20.7 yr., SD = 1.9) completed a parafoveal subliminal priming paradigm as well as questionnaires about jealousy and preventive jealousy. As predicted, women were not affected by their rival's status, but women high in preventive jealousy reported more jealousy than women low in preventive jealousy. However, whereas men low in preventive jealousy reported equal amounts of jealousy after exposure to a high-status and a low-status rival, surprisingly, and contrary to the expectations, men high in preventive jealousy reported most jealousy after exposure to a low-status rival. To explain these unexpected results, threats to self-esteem were discussed.

Jealousy: Evidence of strong sex differences using both forced choice and continuous measure paradigms

Despite some controversy about sex differences in jealousy, data largely support that sex differences studied with the forced choice (FC) paradigm are robust: Men, relative to women, report greater jealousy in response to sexual infidelity than in response to emotional infidelity. Corresponding sex differences for continuous measures of jealousy typically have been less robust in the literature. A large sample of Norwegian students (N=1074) randomly responded to either FC or continuous measure questionnaires covering four infidelity scenarios. Large, comparable, theoretically-predicted sex differences were evident for both FC and continuous measures. Relationship status, infidelity experiences, and question order manipulation (activation) did not consistently influence the sex differences for either measure, nor did individual differences in sociosexual orientation or relationship commitment. These large sex differences are especially noteworthy as they emerge from a highly egalitarian nation with high paternal investment expectancy, and because they contradict social role theories that predict a diminution of psychological sex differences as gender economic equality increases.

Sex Differences in Jealousy Are Not Explained by Attachment Style in Men and Women From Chile

Romantic jealousy is a sexually-differentiated emotion designed to secure reproductive liaisons. However, some suggest that sexual differences observed in the kind of infidelity that triggers jealousy cross-culturally could be only an artifact of attachment, shaping the masculine mind to develop a dismissing/avoidant attachment style, while the feminine attachment style is more likely to be anxious. This assumption was tested on a sample of 88 men and 170 women from Chile. The kind of infidelity that was more distressing was compared by sex and attachment style. As expected, results showed that men feel more jealousy distress by sexual infidelity scenario, while women by emotional infidelity scenario. However, Logistic Regressions did not support the proposition that attachment style may underlie sex differences in jealousy, because sex was the only significant predictors of the kind of jealousy that was more distressing. The discussion addresses the consistency of the evolved jealousy mechanism as plastic, but opened to specific contextual inputs other than attachment style.

Height and jealousy over partner’s ex and a new rival among coupled men and women

Recent studies suggest that body height has an effect on the intensity of jealousy among men and women. Since short men and both short and tall women are regarded as less attractive, they could be at greater risk of being cheated by their partners and therefore more jealous. Numerous studies have documented sex differences in jealousy about a partner’s sexual and emotional infidelity with a person of the opposite sex. However, the partner’s ex as a rival has been neglected in the literature. Therefore, in this study the relationships between height and jealousy about two types of infidelity among 112 heterosexual men and 314 women were investigated. Infidelity scenarios included two types of rival: new rival and partner’s ex. As expected on the basis of prior studies, men were more jealous of sexual infidelity and women of emotional infidelity. Both sexes reported greater jealousy over a new rival than over partner’s ex. Among men, there were no relationships between height and jealousy, while among women...

A Reconsideration of Sex Differences in Response to Sexual and Emotional Infidelity

Previous studies have found that males are more upset over sexual infidelity than females whereas females are more upset over emotional infidelity than males. We hypothesized that such sex differences are explained by explicit sexual imagery by males. The hypothesis was tested in a laboratory using vivid infidelity scenarios and photographs to induce detailed and sexually oriented imagery of a partner's infidelity. In the main experiment, participants included 64 males and 64 females who were currently in committed relationships. The results showed that participants became more upset when they imagined sexual infidelity vividly and realistically than when they did not and there were no significant sex differences in jealousy found when sexual infidelity was imagined in this matter. Overall, our findings suggested that the sex differences in jealousy resulted from males' tendency to imagine sexual infidelity more vividly than females.

The Mate Value Scale

Mate value is a construct of importance to many psychological (especially evolutionary psychological) theories. However, there are no well validated self-report measures of mate value. In light of this, we designed the Mate Value Scale (MVS): a brief, four-item measure that can assess mate value of the self, of one’s partner, or of another target. Study One demonstrates that the MVS has good internal consistency, a one-factor structure, and good convergent validity. Study Two replicates these psychometric findings along with demonstrations of good test–retest reliability and further convergent and discriminant validity. Study Three demonstrates how the MVS can successfully be applied to an evolutionary psychological domain (the sex difference in jealousy). Additional cited research demonstrates the MVS’s utility in a number of other domains. We conclude that the MVS is a short and effective measure of mate value.

Sex Differences in Jealousy: A Population-Based Twin Study in Sweden

According to the theory of evolved sex differences in jealousy, the challenge for women to ensure paternal investment increased their jealousy response to emotional infidelity, whereas paternal uncertainty exerted selective pressures that shaped men to become more distressed by sexual infidelity. Several studies have investigated whether the effect of these sexually dimorphic selection pressures can be detected in contemporary human populations, with conflicting results. To date, no genetically informed studies of sex differences in jealousy have been conducted. We used data from the Screening Across the Lifespan of Twins Younger (SALTY) sample, containing information concerning self-rated jealousy from 3,197 complete twin pairs collected by the Swedish Twin Registry. Intra-class correlations and structural equation models were used to assess the genetic influence on jealousy and to investigate sex differences at genetic level. We saw a highly significant sex effect on the relationship between infidelity types, indicating that men, relative to women, reported greater jealousy in response to sexual infidelity than in response to emotional infidelity. The twin models revealed significant heritabilities for both sexual (32%) and emotional (26%) jealousy. The heritabilities were of a similar magnitude in both sexes, and no qualitative sex differences could be detected. We show for the first time that variance in jealousy is to some extent explained by genetic factors. Even though our results from the mean value analyses are in line with the theory of evolved sex differences in jealousy, we could not identify any sex differences on a genetic level.

Sex differences in jealousy over Facebook activity

Forty heterosexual undergraduate students (24 females, 16 males) who were currently in a romantic relationship filled out a modified version of The Facebook Jealousy questionnaire (Muise, Christofides, & Desmarais, 2009). The questionnaire was filled out twice, once with the participant’s own personal responses, and a second time with what each participant imagined that his/her romantic partner’s responses would be like. The data indicated that females were more prone to Facebook-evoked feelings of jealousy and to jealousy-motivated behavior than males. Males accurately predicted these sex differences in response to the jealousy scale, but females seemed unaware that their male partners would be less jealous than themselves.

Don't It Make My Brown Eyes Green? An Analysis of Facebook Use and Romantic Jealousy

Social networking Web sites, such as Facebook, have changed the way in which people communicate online. The present study examined the relationship between jealousy and Facebook use experimentally by asking participants to imagine viewing their romantic partner's Facebook page. We varied the hypothetical privacy settings and number of photos of the couple publicly available on Facebook. Results indicated that imagined privacy settings and the presence of couple photos affected negative emotions (jealousy, anger, disgust, and hurt). Furthermore, we found sex differences indicating that women felt more intense negative emotions after thinking about the fictitious scenario than did men, particularly when evidence of infidelity was public to others. These results have implications for sex differences in jealousy and suggest that the manner in which people employ Facebook privacy settings can be negative for romantic relationships.

Sex differences in jealousy in response to infidelity: Evaluation of demographic moderators in a national random sample

Studies examining sex differences in jealousy have often relied on student samples and were restricted to the evaluation of a selected few moderators. In this study, a nationally representative survey of American households was presented with either an actual or a hypothetical infidelity scenario (which appeared as either a forced choice or as continuous measures). Significant sex differences only emerged for forced choice measures and not for continuous measures. Importantly, this effect appeared most strongly in participants reporting reactions to an actual infidelity. We also explored a number of potential moderators of this effect. These moderators were more influential for the hypothetical than for the actual infidelity scenario. Exploratory analysis of additional demographic variables was conducted.