Romantic love modulates women's identification of men's body odors

Romantic love is one of our most potent and powerful emotions, but very little is known with respect to the hormonal and psychological mechanisms in play. Romantic love is thought to help intimate partners stay committed to each other and two mechanisms have been proposed to mediate this commitment: increased attention towards one's partner or deflected attention away from other potential partners. Both mechanisms find support in the literature. We explored the potential influence of each of these mechanisms by assessing women's ability to identify (ID) body odors originating from their boyfriend, a same-sex friend, and an opposite-sex friend and the relationship between this ability and the degree of romantic love expressed towards their boyfriend. We hypothesized that an increase in attention towards one's partner would render a positive correlation between ID of a boyfriend's body odor and degree of romantic love; conversely, we hypothesized that attention deflected away from other potential partners would render a negative correlation between ID of an opposite-sex friend's body odor and degree of romantic love for the boyfriend. Our results supported the deflection theory as we found a negative correlation between the degree of romantic love for the subjects' boyfriends and their ability to ID the body odor of an opposite-sex friend but not of their boyfriend or same-sex friend. Our results indicate that romantic love deflects attention away from potential new partners rather than towards the present partner. These changes are likely mediated by circulating neuropeptides and a testable model is suggested.     

Attachment styles and emotional content, stress, and conflict in dreams of romantic partners.

Expanding on previous research investigating the link between dreams and attachment, participants in committed dating relationships were recruited to fill out dream diaries for 1 week. It was hypothesized that when dreaming about romantic partners (attachment figures), dream content would vary by attachment style, such that insecurely attached individuals would experience a different quality of dream, emotionally and cognitively. At Time 1, participants completed a self-report measure of attachment style, and then completed a dream diary at home each morning for 7 days. Dreams that contained romantic partners were coded by double-blind research assistants for emotional content, with a focus on attachment-related emotions and stressful expressions. Anxious-attached and avoidant-attached participants experienced significantly more stress and conflict, and scored significantly higher on specific emotions such as anxiety and jealousy in such dreams. Secure scores did not correlate with any specific or general emotion. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Do Conflict Resolution and Recovery Predict the Survival of Adolescents' Romantic Relationships?

Numerous studies have shown that being able to resolve and recover from conflicts is of key importance for relationship satisfaction and stability in adults. Less is known about the importance of these relationship dynamics in adolescent romantic relationships. Therefore, this study investigated whether conflict resolution and recovery predict breakups in middle adolescent couples. Couples who are able to resolve and recover from conflict were expected to demonstrate a lower probability of breaking up. In total, 80 adolescent couples (M age = 15.48, SD = 1.16) participated in a 4-wave prospective questionnaire and observational study, with one year between measurements. In addition to self-report measures, adolescents were observed in real-time during conflicts with their partners. Multilevel Proportional Hazard analyses revealed that, contrary to the hypothesis, conflict resolution and conflict recovery did not predict the likelihood of breakup. Survival differences were not attributable to conflict resolution or conflict recovery. More research is needed to consider the unique relationship factors of adolescent romantic relationships to determine why some relationships survive while others do not.     

Empathy manipulation impacts music-induced emotions: a psychophysiological study on opera

This study investigated the effects of voluntarily empathizing with a musical performer (i.e., cognitive empathy) on music-induced emotions and their underlying physiological activity. N = 56 participants watched video-clips of two operatic compositions performed in concerts, with low or high empathy instructions. Heart rate and heart rate variability, skin conductance level (SCL), and respiration rate (RR) were measured during music listening, and music-induced emotions were quantified using the Geneva Emotional Music Scale immediately after music listening. Listening to the aria with sad content in a high empathy condition facilitated the emotion of nostalgia and decreased SCL, in comparison to the low empathy condition. Listening to the song with happy content in a high empathy condition also facilitated the emotion of power and increased RR, in comparison to the low empathy condition. To our knowledge, this study offers the first experimental evidence that cognitive empathy influences emotion psychophysiology during music listening.     

Reconciliation, relationship quality, and postconflict anxiety: testing the integrated hypothesis in captive chimpanzees

Reconciliation is a conflict resolution mechanism that is common to many gregarious species with individualized societies. Reconciliation repairs the damaged relationship between the opponents and decreases postconflict (PC) anxiety. The "integrated hypothesis" links the quality of the opponents' relationship to PC anxiety, since it proposes that conflicts among partners with high relationship quality will yield high levels of PC anxiety, which in turn will lead to an increased likelihood of reconciliation. We tested the integrated hypothesis in captive chimpanzees (Pan troglodytes) in the Arnhem Zoo, The Netherlands. We applied the standard PC/matched control (MC) method. Our results mostly support the integrated hypothesis, in that more valuable and compatible partners (i.e., males and frequent groomers) reconciled more often than less valuable and weakly compatible partners (i.e., females and infrequent groomers). In addition, PC anxiety was higher after conflicts among males than among females. Emotional arousal thus appears to be a mediator facilitating reconciliation. However, in contrast to the predictions derived from the integrated hypothesis, PC anxiety appeared only in aggressees, and not in aggressors, of conflicts. This suggests that while relationship quality determines PC anxiety, it is dependent on the role of the participants in the conflict.     

It's not just lunch: extra-pair commensality can trigger sexual jealousy

Do people believe that sharing food might involve sharing more than just food? To investigate this, participants were asked to rate how jealous they (Study 1)--or their best friend (Study 2)--would be if their current romantic partner were contacted by an ex-romantic partner and subsequently engaged in an array of food- and drink-based activities. We consistently find--across both men and women--that meals elicit more jealousy than face-to-face interactions that do not involve eating, such as having coffee. These findings suggest that people generally presume that sharing a meal enhances cooperation. In the context of romantic pairs, we find that participants are attuned to relationship risks that extra-pair commensality can present. For romantic partners left out of a meal, we find a common view that lunch, for example, is not "just lunch."     

Jealousy evocation, partner reassurance, and relationship stability: An exploration of the potential benefits of jealousy

Three studies examined possible effects of jealousy evocation and jealous expression in romantic relationships. In Study 1, we used an indirect method to examine subjects' motivations for evoking jealousy in their romantic partners. Students' attributions for ambiguous interactions suggest that jealousy evocation is goal specific and that it is primarily used for mate retention. A majority of Study 1 participants also reported that they had previously attempted to evoke jealousy in a romantic partner to accomplish relationship goals. In Study 2, we examined the expected effect of jealousy evocation, from the perspective of the jealous partner. Here, results suggest that jealousy evocation is unlikely to produce immediate relationship benefits; in fact, it seems more likely to provoke fighting between romantic partners. Finally, in Study 3, we examined the longitudinal association of jealousy with relationship stability. Although there was a positive lagged correlation between participants' partners' jealousy and relationship stability, this association was not significant when participants' prior relationship commitment was controlled. This suggests that while jealousy itself is not causally related to relationship stability, a person's reactions to their jealous partner may be.     

Physiological Responses Induced by Emotion-Eliciting Films

Emotion-eliciting films are commonly used to evoke subjective emotional responses in experimental settings. The main aim of the present study was to investigate whether a set of film clips with discrete emotions were capable to elicit measurable objective physiological responses. The convergence between subjective and objective measures was evaluated. Finally, the effect of gender on emotional responses was investigated. A sample of 123 subjects participated in the study. Individuals were asked to view a set of emotional film clips capable to induce seven emotions: anger, fear, sadness, disgust, amusement, tenderness and neutral state. Skin conductance level (SCL), heart rate (HR) and subjective emotional responses were measured for each film clip. In comparison with neutral films, SCL was significantly increased after viewing fear films, and HR was also significantly incremented for anger and fear films. Physiological variations were associated with arousal measures indicating a convergence between subjective and objective reactions. Women appeared to display significantly greater SCL and HR responses for films inducing sadness. The findings suggest that physiological activation would be more easily induced by emotion-eliciting films that tap into emotions with higher subjective arousal such as anger and fear.     

Non‐verbal mate retention behaviour in women and its relation to couple's relationship adjustment and satisfaction

The function of mate retention strategies is to preserve the bond between romantic partners and to prevent desertion, which is also why such behaviours are often elicited by the presence of a potential rival. Most existing studies on mate retention are based on self‐reports, which are prone to various biases. In this study, we observed non‐verbal behaviour of 47 long‐term romantic heterosexual couples during their interview with a female experimenter, whom the women in the couples may have perceived as a potential rival. We measured non‐verbal displays of mate retention tactics (direct guarding, intimacy inducement, appearance enhancement, and love and care display), as well as relationship maintenance strategies of openness and positivity. We expected that relationship quality as reported by both partners in the couple would be positively associated with ‘benefit‐provisioning’ mate retention behaviours and negatively associated with a ‘cost‐inflicting’ mate retention tactic (direct guarding). Relationship quality was assessed by Spanier's Dyadic Adjustment Scale using both the total score of dyadic adjustment and a Dyadic Satisfaction subscale. We found a significant association between both partners' dyadic adjustment and satisfaction and woman's appearance enhancement behaviours (such as self‐touch, hair flip and primp) in the presence of her partner and a potential rival. We also found a negative association between partner's dyadic adjustment and woman's direct guarding of partner using short looks, and a positive association between woman's intimacy‐inducing behaviour using long gaze and her own dyadic satisfaction and her partner's dyadic adjustment. Our results highlight the specific role of female attractiveness in later stages of romantic relationships within the context of mate retention and draw attention to the significance of the use of observational techniques in addition to self‐reports.     

The Dynamic Interplay among Maternal Empathy,Quality of Mother-Adolescent Relationship,and Adolescent Antisocial Behaviors: New Insights from a Six-Wave Longitudinal Multi-Informant Study

Adolescents’ behavior is often a matter of concern, given their increased likelihood of enacting antisocial behaviors, which cause disruptions in the social order and are potentially harmful for the adolescents themselves and for the people around them. In this six-wave longitudinal study we sought to examine the interplay among maternal empathy, multiple indicators of mother-adolescent relationship quality (i.e., balanced relatedness, conflict, and support), and adolescent antisocial behaviors rated both by adolescents and their mothers. Participants for the current study were 497 Dutch adolescents (56.9% males) followed from age 13 to 18, and their mothers. A series of cross-lagged panel models revealed reciprocal associations between maternal empathy and mother-adolescent relationship quality and between mother-adolescent relationship quality and adolescent antisocial behaviors. Interestingly, we also found some indirect effects of adolescent antisocial behaviors on maternal empathy mediated by mother-adolescent relationship quality. Overall, this study further highlights a process of reciprocal influences within mother-adolescent dyads.     

Viewing pictures of a romantic partner reduces experimental pain: involvement of neural reward systems

The early stages of a new romantic relationship are characterized by intense feelings of euphoria, well-being, and preoccupation with the romantic partner. Neuroimaging research has linked those feelings to activation of reward systems in the human brain. The results of those studies may be relevant to pain management in humans, as basic animal research has shown that pharmacologic activation of reward systems can substantially reduce pain. Indeed, viewing pictures of a romantic partner was recently demonstrated to reduce experimental thermal pain. We hypothesized that pain relief evoked by viewing pictures of a romantic partner would be associated with neural activations in reward-processing centers. In this functional magnetic resonance imaging (fMRI) study, we examined fifteen individuals in the first nine months of a new, romantic relationship. Participants completed three tasks under periods of moderate and high thermal pain: 1) viewing pictures of their romantic partner, 2) viewing pictures of an equally attractive and familiar acquaintance, and 3) a word-association distraction task previously demonstrated to reduce pain. The partner and distraction tasks both significantly reduced self-reported pain, although only the partner task was associated with activation of reward systems. Greater analgesia while viewing pictures of a romantic partner was associated with increased activity in several reward-processing regions, including the caudate head, nucleus accumbens, lateral orbitofrontal cortex, amygdala, and dorsolateral prefrontal cortex--regions not associated with distraction-induced analgesia. The results suggest that the activation of neural reward systems via non-pharmacologic means can reduce the experience of pain.     

Female perception of a partner’s mate value discrepancy and controlling behaviour in romantic relationships

Mate value discrepancy (MVD) between heterosexual partners is an important factor influencing relationship satisfaction which, in turn, has an effect on the quality and the stability of the relationship. Therefore, partners’ involvement in mate retention behaviours, such as controlling behaviours, can be related to MVD and our study aims to determine whether such an association exists. In order to do so, we analysed female perception of MVD and their opinion regarding the intensity of controlling behaviours performed by themselves as well as their romantic partners. Female perception of the intensity of controlling behaviours performed by both partners was the highest in couples where a woman assesses her own mate value (MV) as higher than her partner’s MV and significantly different than in relationships where male MV exceeded those of the female. Our study also indicates that MVD should be taken into account when analysing sex differences in intensities of mate retention behaviours. Finally, we provide evidence supporting the significance of the relationship length for controlling behaviour intensity. Findings are discussed within an evolutionary perspective.     

Validating the German version of the Quality of Relationship Inventory: confirming the three-factor structure and report of psychometric properties

Research on psychosocial influences such as relationship characteristics has received increased attention in the clinical as well as social-psychological field. Several studies demonstrated that the quality of relationships, in particular with respect to the perceived support within intimate relationships, profoundly affects individuals' mental and physical health. There is, however, a limited choice of valid and internationally known assessments of relationship quality in Germany. We report the validation of the German version of the Quality of Relationships Inventory (QRI). First, we evaluated its factor structure in a representative German sample of 1.494 participants by means of confirmatory factor analysis. Our findings support the previously proposed three-factor structure. Second, importance and satisfaction with different relationship domains (family/children and relationship/sexuality) were linked with the QRI scales, demonstrating high construct validity. Finally, we report sex and age differences regarding the perceived relationship support, conflict and depth in our German sample. In conclusion, the QRI is a reliable and valid measurement to assess social support in romantic relationships in the German population.     

A high-powered replication study finds no effect of starting or stopping hormonal contraceptive use on relationship quality

A number of recent studies have implicated that incongruent use of hormonal contraceptives (HCs) negatively affects various aspects of women's romantic relationships. It has been suggested that women with incongruent HC use (a discrepancy in HC use status between when they first met their current partner and the time of study participation) report less sexual satisfaction and higher jealousy scores compared to women with congruent HC use. A similar effect has also been hypothesized for general relationship satisfaction, and recent findings suggest that the association between HC incongruency and women's general relationship satisfaction is moderated by third-party ratings of facial attractiveness of the women's male partners. Using a large convenience sample (N = 948) of Finnish women, we attempted to replicate previously reported findings but found no support for the HC congruency hypothesis, despite excellent statistical power (≥98.7%) to detect previously reported effect sizes. Instead, after dividing our sample into four groups based on HC congruency/incongruency, we found that the largest differences in jealousy, sexual satisfaction, and relationship satisfaction scores tended to be found between women who were consistent HC users and consistent non-users (i.e., between women with different kinds of congruent HC use). We also detected a significant main effect of current HC use on jealousy. We conclude that HC congruency effects reported in previous studies may have spuriously arisen from unequal distributions of current HC users within congruent and incongruent HC user groups.     

Empathy-Related Ratings to Still Images of Human and Nonhuman Animal Groups in Negative Contexts Graded for Phylogenetic Similarity

ABSTRACT

Research using film stimuli has shown that the strength of empathy-related responses toward nonhuman animals is related to the amount of phylogenetic similarity of the animals to humans. The present study aimed to develop and validate a new set of still images depicting humans and nonhuman animals (primates, quadruped mammals, birds, reptiles) in negative circumstances to provide greater control over variable image quality and contextual features found to be present in film stimuli. Following development of the stimulus set, participants (40 males, 46 females) with a mean age of 23.35 years made subjective ratings of empathy and other reactions to the images. The hypothesized effect of higher ratings of empathy for nonhuman animals that were more closely related to humans was supported. The same effect of phylogenetic similarity was also observed for ratings of arousal, dominance, interest, and pleasantness elicited by the images. Moreover, a clear effect of trait empathy emerged, consistent with the prediction that higher empathy ratings would be elicited from those higher in trait empathy. Familiarity, as assessed by level of involvement with the presence and care of animals, was also positively related to trait empathy. The findings validate a new methodology for the assessment of human empathy toward other humans and nonhuman species depicted in negative life situations. Furthermore, the findings demonstrate that human empathy generalizes toward other species according to perceived phylogenetic similarity.     

Hormonal contraceptive use and mate retention behavior in women and their male partners

Female hormonal contraceptive use has been associated with a variety of physical and psychological side effects. Women who use hormonal contraceptives report more intense affective responses to partner infidelity and greater overall sexual jealousy than women not using hormonal contraceptives. Recently, researchers have found that using hormonal contraceptives with higher levels of synthetic estradiol, but not progestin, is associated with significantly higher levels of self-reported jealousy in women. Here, we extend these findings by examining the relationship between mate retention behavior in heterosexual women and their male partners and women's use of hormonal contraceptives. We find that women using hormonal contraceptives report more frequent use of mate retention tactics, specifically behaviors directed toward their partners (i.e., intersexual manipulations). Men partnered with women using hormonal contraceptives also report more frequent mate retention behavior, although this relationship may be confounded by relationship satisfaction. Additionally, among women using hormonal contraceptives, the dose of synthetic estradiol, but not of synthetic progesterone, positively predicts mate retention behavior frequency. These findings demonstrate how hormonal contraceptive use may influence behavior that directly affects the quality of romantic relationships as perceived by both female and male partners.     

Relationships’ Best Friend: Links between Pet Ownership,Empathy, and Romantic Relationship Outcomes

The benefits of pets on individual wellbeing is well established. But can pets also have benefits for romantic relationships? Using mixed methods, three studies explored the link between pet ownership and romantic relationship quality. First, using a grounded theory approach, we qualitatively investigated participants’ personal beliefs of how their pets influence their romantic relationships by coding open-ended responses. Results suggested that pets are seen as having predominantly positive (86.5%) effects, followed by few neutral (8%) and negative (4.5%) effects (study 1). We next compared a community sample of pet owners’ reports of relationship quality with those of non-pet owners. Results suggested that pet ownership was associated with several relationship benefits (greater overall relationship quality, partner responsiveness, adjustment, and relational investment) compared with couples without pets (study 2). Finally, we examined one possible reason for why pets may benefit relationships: A pet might provide the opportunity to practice empathic abilities, which is a crucial ability in the maintenance of positive relationships. Results showed that the number of years an individual owned a pet was positively correlated with empathic concern, which in turn was linked to several relationship benefits (commitment, couple identity, and relationship maintenance behaviors; study 3). In sum, three studies provided initial evidence that there is indeed a positive association between two important relationships in peoples’ lives: their partners and their pets.     

An Exploratory Study of Domestic Violence: Perpetrators’ Reports of Violence Against Animals

The goal of the current exploratory study was to examine associations between animal cruelty (AC), intimate partner violence (IPV), and antisocial personality disorder (ASPD) among incarcerated adult males. Forty-two men incarcerated in a state prison participated in the study; all participants were incarcerated for IPV and/or admitted to committing IPV in a past relationship. They completed measures on childhood animal cruelty (CAC), lifetime prevalence of AC, and IPV. It was hypothesized that men with ASPD diagnoses would report greater exposure to, and perpetration of, AC, as well as more severe IPV behaviors. It was also expected that lifetime exposure to, and perpetration of, AC would be associated with greater animal abuse in the context of IPV. Lastly, it was hypothesized that participants who reported exposure to, and perpetration of, AC would also report higher rates of IPV behaviors. Rates of animal cruelty were high in this sample. Approximately 36% of participants endorsed CAC, 81% reported animal cruelty perpetration in their lifetime, 85.7% reported being exposed to animal cruelty during their lifetime, 38% endorsed using threats against animals during a relationship conflict, and 52% reported abusing and/or killing a pet during a relationship conflict. CAC was significantly related to increased use of psychological abuse and sexual coercion in the context of intimate relationships. ASPD was not related to animal cruelty in the context of IPV. CAC was significantly associated with both threats to, and actual perpetration of, animal abuse during relationship conflicts. The limitations and implications of our findings are discussed in relation to future research.     

Acoustical expression of arousal in conflict situations in tree shrews (<Emphasis Type="Italic">Tupaia belangeri)</Emphasis>

Empirical research on human and non-human primates suggests that communication sounds express the intensity of an emotional state of a signaller. In the present study, we have examined communication sounds during induced social interactions of a monogamous mammal, the tree shrew. To signal their unwillingness to mate, female tree shrews show defensive threat displays towards unfamiliar males paralleled by acoustically variable squeaks. We assumed that the distance between interacting partners as well as the behavior of the male towards the female indicates the intensity of perceived social threat and thereby the arousal state of a female. To explore this hypothesis we analyzed dynamic changes in communication sounds uttered during induced social interactions between a female and an unfamiliar male. Detailed videographic and sound analyzes revealed that the arousal state predicted variations in communication sound structure reliably. Both, a decrease of distance and a male approaching the female led to an increase in fundamental frequency and repetition rate of syllables. These findings support comparable results in human and non-human primates and suggest that common coding rules in communication sounds govern acoustic conflict regulation in mammals.     

Behavioral and hormonal responses of men to brief interactions with women

This study tested for behavioral and hormonal reactions of young men to brief social encounters with potential mating partners. Male college students were randomly assigned to engage in a short conversation with either a young man (male condition) or a young woman (female condition). Participants provided saliva samples before and after the conversation, completed a battery of psychological measures after the interaction, and had their behavior rated by their conversation partners. Salivary testosterone (T) increased significantly over baseline levels in the female condition only, though differences between conditions were not significant. In addition, change in T was significantly correlated with the degree to which the female confederates thought the male participants were trying to impress them. These behavioral ratings, in turn, were correlated with the participants' ratings of the female confederates as potential romantic partners. Results were generally consistent with the hypothesis that human males may exhibit a behavioral and endocrine courtship response that is similar to that observed in males of many nonhuman vertebrate species.