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Despite the worldwide increase in unpartnered individuals (i.e., singles), little research exists to provide a comprehensive understanding of the heterogeneity within this population. In the present research (

Romantic passion represents one of the most fragile and elusive elements of relationship quality but one that is increasingly valued and tied to relationship and individual well-being. We provide the first examination of whether experiencing personal self-expansion-positive self-change and personal growth without a romantic partner-is a critical predictor of passion. Previous research has almost exclusively examined the consequences of couples' sharing novel experiences (i.e., relational self-expansion) on romantic relationships. Instead, the consequences of personal self-expansion for romantic relationships remain largely unexamined even though most positive self-growth may occur without a romantic partner (e.g., at work). We investigated the consequences of personal self-expansion for passion in three studies including two 21-day experience sampling studies of community couples and a study in a context likely to elicit heightened personal self-expansion: during job relocation. Within-person increases in daily personal self-expansion were associated with greater passion through greater positive emotions (Studies 1 and 2). In contrast, high between-person levels of personal self-expansion were associated with lower passion through lower levels of intimacy, suggesting that individuals may drift apart from their partners with more chronic personal self-expansion (Studies 1, 2, and 3). That is, consistently growing outside of the relationship in ways that are not shared with a romantic partner may reduce feelings of closeness and connection, and ultimately passion. Results also suggest that chronic personal self-expansion may be a double-edged sword for individual well-being, simultaneously associated with lower passion, but greater fulfillment of competence needs. Results controlled for relational self-expansion and time together. (PsycInfo Database Record (c) 2021 APA, all rights reserved).

We examined tracking accuracy and bias (mean-level and projection) in people's perceptions of their romantic partner's relationship approach and avoidance motives, similarity in partners' motives, and positive and negative emotions as potential cues used to make judgments about a partner's daily motives and motives during shared activities. Using data from 2 studies, 1 using daily diaries (N = 2,158 daily reports), the other using reports of shared activities (N = 1,228 activity reports), we found evidence of tracking accuracy and projection across samples; we also found evidence of mean-level bias such that people underperceived their partner's approach (daily) and avoidance motives (daily and in shared activities). Partners had similar daily approach and avoidance motives but were not similar in their motives during shared activities. Further, our studies indicated that emotions often serve as relevant, available, and detectable cues for judging a partner's motives. The results demonstrate that accuracy and bias are both present in judgments of a romantic partner's approach and avoidance motives, and that people often, but not always, use their partner's emotions to make such judgments. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Five studies examined whether receiving gratitude expressions from a romantic partner can buffer insecurely attached individuals from experiencing low relationship satisfaction and commitment. In Study 1, the negative associations between attachment avoidance and both satisfaction and commitment were weaker among individuals who perceived that their partner expressed gratitude more frequently. The same pattern was found with attachment anxiety and satisfaction. Study 2 showed that among individuals who perceived high (vs. low) levels of gratitude expressions from the partner, both attachment dimensions were less strongly related to the belief that the partner is low in communal strength, which, in turn, was associated with greater satisfaction and commitment. In Studies 3-5, we examined whether perceptions or a partner's actual gratitude expression can have benefits on insecurely attached individuals' daily satisfaction. Our results indicated that perceived, rather than a partner's self-reported, gratitude expressions were critical to buffering insecurely attached individuals' daily dissatisfaction. Study 5 also provided evidence for long-term benefits of perceiving a partner's gratitude expressions on avoidantly attached individuals' relationship. Perceiving high levels of a partner's gratitude expressions on average enhanced avoidantly attached individuals' feelings of being cared for by the partner 3 months later, which were associated with greater satisfaction and commitment. Results from our meta-analysis indicated that benefits of perceiving a partner's gratitude expressions may be specific to buffering the negative effects of attachment avoidance on satisfaction. Overall, our findings highlight the powerful function of gratitude in insecurely attached individuals' romantic relationships. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

The decision to end a romantic relationship can have a life-changing impact on the partner as well as the self. Research on close relationships has thus far focused on self-interested reasons why people choose to stay in their relationship versus leave. However, a growing body of research on decision-making and prosociality shows that when people make decisions that impact others, they take those others’ feelings and perspectives into consideration. In the present research, we tested the prediction that people make stay/leave decisions prosocially, such that consideration for their romantic partner’s feelings can discourage people from ending their relationships. In Study 1, a total of 1,348 participants in romantic relationships were tracked over a 10-week period. Study 2 was a preregistered replication and extension of Study 1, in which 500 participants contemplating a breakup were followed over a 2-month period. Both studies showed that the more dependent people believed their partner was on the relationship, the less likely they were to initiate a breakup. These findings held above and beyond a variety of self-focused variables (e.g., investment model components; Rusbult, Martz, & Agnew, 1998). These results suggest that people can be motivated to stay in relatively unfulfilling relationships for the sake of their romantic partner. (PsycINFO Database Record (c) 2018 APA, all rights reserved)

In the early stages of romantic relationships, sexual desire is often intense, but over time, as partners get to know each other, desire tends to decline. Low sexual desire has negative implications for relationship satisfaction and maintenance. Self-expansion theory suggests that engaging in novel activities with a long-term romantic partner can reignite feelings of passion from the early stages of a relationship. Across 3 studies using dyadic, daily experience, longitudinal, and experimental methods, we find evidence for our central prediction that engaging in self-expanding activities with a partner is associated with higher sexual desire. In turn, we found that higher desire fueled by self-expansion is associated with greater relationship satisfaction. Self-expansion, through sexual desire, is also associated with an increased likelihood that couples will engage in sex, and when they do engage in sex, they feel more satisfied with their sexual experiences. We also demonstrate that the benefits of self-expansion for relationship satisfaction are sustained over time, and that the effects cannot be attributed solely to increases in positive affect, time spent interacting with the partner or closeness during the activity. Implications for self-expansion theory and sexual desire maintenance in relationships are discussed. (PsycINFO Database Record (c) 2019 APA, all rights reserved).

Men's sexual overperception bias-where men tend to perceive greater sexual interest in women's behavior than actually exists-is a well-documented finding in previous research. All of the existing research, however, has tested this effect in the context of initial encounters or for fictitious or unknown targets. No research currently exists on how people perceive their romantic partner's sexual desire in the context of ongoing, intimate relationships. In 3 dyadic studies, we provide evidence that men in established romantic relationships err in the direction of the opposite bias and underperceive their romantic partner's sexual desire. We also demonstrate that this underperception bias is functional (particularly for men) in that it is associated with their partner feeling more satisfied and committed to the relationship. In addition, people are particularly likely to underperceive their partner's desire on days when they are motivated to avoid sexual rejection, and men's underperception bias is, in part, accounted for by men's higher general levels of sexual desire than women. The current studies extend previous findings on sexual perceptual biases and demonstrate the important role of context in men's judgments of a partner's sexual interest. (PsycINFO Database Record

The present research demonstrates that fear of being single predicts settling for less in romantic relationships, even accounting for constructs typically examined in relationship research such as anxious attachment. Study 1 explored the content of people's thoughts about being single. Studies 2A and 2B involved the development and validation of the Fear of Being Single Scale. Study 2C provided preliminary support for the hypothesis that fear of being single predicts settling for less in ongoing relationships, as evidenced by greater dependence in unsatisfying relationships. Study 3 replicated this effect in a longitudinal study demonstrating that fear of being single predicts lower likelihood of initiating the dissolution of a less satisfying relationship. Studies 4A and 4B explored the predictive ability of fear of being single for self-reported dating standards. Across both samples, fear of being single was unrelated to self-reported standards for a mate, with the exception of consistently higher standards for parenting. Studies 5 and 6 explored romantic interest in targets that were manipulated to vary in responsiveness and physical attractiveness. These studies found that fear of being single consistently predicted romantic interest in less responsive and less attractive dating targets. Study 7 explored fear of being single during a speed-dating event. We found that fear of being single predicted being less selective in expressing romantic interest but did not predict other daters' romantic interest. Taken together, the present research suggests that fear of being single is a meaningful predictor of settling for less in relationships.

How do people believe they can best maintain sexual satisfaction in their romantic relationships? In the current research, we draw upon the literature on implicit theories of relationships to develop and validate a scale examining 2 types of lay beliefs about how sexual satisfaction can be maintained over time. Individuals high in sexual growth beliefs think that sexual satisfaction is attained from hard work and effort, whereas individuals high in sexual destiny beliefs think that sexual satisfaction is attained through finding a compatible sexual partner. Across 6 studies (2 cross-sectional online studies, a 21-day daily experience study, 2 dyadic studies, and an experimental manipulation; N = 1,896), we find evidence that those higher in sexual growth beliefs experience higher relationship and sexual satisfaction, and have partners who are more satisfied. Conversely, the effects of sexual destiny beliefs on satisfaction are contingent upon signs of partner compatibility: When individuals high in sexual destiny beliefs experience greater sexual disagreements in their relationship, they experience lower relationship quality. These results are independent of general relationship implicit beliefs, providing evidence for the uniqueness of these 2 constructs and the importance of examining implicit beliefs in the domain of sexuality. Overall, these results provide novel evidence that individuals' lay beliefs about maintaining sexual satisfaction are important for understanding the quality of their sex lives and relationships. (PsycINFO Database Record

Three studies tested whether adopting strong (relative to weak) approach goals in relationships (i.e., goals focused on the pursuit of positive experiences in one's relationship such as fun, growth, and development) predict greater sexual desire. Study 1 was a 6-month longitudinal study with biweekly assessments of sexual desire. Studies 2 and 3 were 2-week daily experience studies with daily assessments of sexual desire. Results showed that approach relationship goals buffered against declines in sexual desire over time and predicted elevated sexual desire during daily sexual interactions. Approach sexual goals mediated the association between approach relationship goals and daily sexual desire. Individuals with strong approach goals experienced even greater desire on days with positive relationship events and experienced less of a decrease in desire on days with negative relationships events than individuals who were low in approach goals. In two of the three studies, the association between approach relationship goals and sexual desire was stronger for women than for men. Implications of these findings for maintaining sexual desire in long-term relationships are discussed.

This research provided the first empirical investigation of how approach and avoidance motives for sacrifice in intimate relationships are associated with personal well-being and relationship quality. In Study 1, the nature of everyday sacrifices made by dating partners was examined, and a measure of approach and avoidance motives for sacrifice was developed. In Study 2, which was a 2-week daily experience study of college students in dating relationships, specific predictions from the theoretical model were tested and both longitudinal and dyadic components were included. Whereas approach motives for sacrifice were positively associated with personal well-being and relationship quality, avoidance motives for sacrifice were negatively associated with personal well-being and relationship quality. Sacrificing for avoidance motives was particularly detrimental to the maintenance of relationships over time. Perceptions of a partner's motives for sacrifice were also associated with well-being and relationship quality. Implications for the conceptualization of relationship maintenance processes along these 2 dimensions are discussed.

In the present article, we introduce the quadratic vagal activity-prosociality hypothesis, a theoretical framework for understanding the vagus nerve's involvement in prosociality. We argue that vagus nerve activity supports prosocial behavior by regulating physiological systems that enable emotional expression, empathy for others' mental and emotional states, the regulation of one's own distress, and the experience of positive emotions. However, we contend that extremely high levels of vagal activity can be detrimental to prosociality. We present 3 studies providing support for our model, finding consistent evidence of a quadratic relationship between respiratory sinus arrhythmia--the degree to which the vagus nerve modulates the heart rate--and prosociality. Individual differences in vagal activity were quadratically related to prosocial traits (Study 1), prosocial emotions (Study 2), and outside ratings of prosociality by complete strangers (Study 3). Thus, too much or too little vagal activity appears to be detrimental to prosociality. The present article provides the 1st theoretical and empirical account of the nonlinear relationship between vagal activity and prosociality.

Although separate literatures have emerged on effects of social threats (i.e., rejection and negative evaluation) and rewards (i.e., connection and intimacy) on the process of commitment to a romantic relationship, no research has examined the influence of both simultaneously. Using an attachment framework, we examined the relation of social threats and rewards to investment model constructs (i.e., commitment, satisfaction, investment, quality of alternatives) in 3 studies. Study 1 (N = 533) and Study 2 (N = 866) assessed attachment styles, reward and threat perceptions, and investment model constructs, and data were analyzed using structural equation models. In Study 3 (N = 358), reward and threat perceptions were experimentally manipulated followed by measurement of investment model constructs. Results showed that attachment avoidance was uniquely associated with lower perceptions of reward, whereas attachment anxiety was uniquely associated with stronger perceptions of threat. Stronger reward perceptions were associated with higher commitment, investment, and satisfaction, as well as lower quality of alternatives in all studies. Stronger threat perceptions were associated with lower satisfaction in all 3 studies. Stronger threat perceptions were also correlated with higher levels of investment and commitment, although these effects did not replicate in our experimental study. Thus, perceptions of reward appear unambiguously associated with higher levels of all facets of commitment, whereas perceptions of threat are most strongly associated with lower satisfaction. These results underscore the importance of considering the effects of rewards and threats simultaneously in commitment processes.

This multimethod series of studies merges the literatures on gratitude and risk regulation to test a new process model of gratitude and relationship maintenance. We develop a measure of appreciation in relationships and use cross-sectional, daily experience, observational, and longitudinal methods to test our model. Across studies, we show that people who feel more appreciated by their romantic partners report being more appreciative of their partners. In turn, people who are more appreciative of their partners report being more responsive to their partners’ needs (Study 1), and are more committed and more likely to remain in their relationships over time (Study 2). Appreciative partners are also rated by outside observers as relatively more responsive and committed during dyadic interactions in the laboratory, and these behavioral displays are one way in which appreciation is transmitted from one partner to the other (Study 3). These findings provide evidence that gratitude is important for the successful maintenance of intimate bonds.

In 2 daily experience studies and a laboratory study, the authors test predictions from approach-avoidance motivational theory to understand how dating couples can maintain feelings of relationship satisfaction in their daily lives and over the course of time. Approach goals were associated with increased relationship satisfaction on a daily basis and over time, particularly when both partners were high in approach goals. Avoidance goals were associated with decreases in relationship satisfaction over time, and people were particularly dissatisfied when they were involved with a partner with high avoidance goals. People high in approach goals and their partners were rated as relatively more satisfied and responsive to a partner's needs by outside observers in the lab, whereas people with high avoidance goals and their partners were rated as less satisfied and responsive. Positive emotions mediated the link between approach goals and daily satisfaction in both studies, and responsiveness to the partner's needs was an additional behavioral mechanism in Study 2. Implications of these findings for approach-avoidance motivational theory and for the maintenance of satisfying relationships over time are discussed.

Four studies examined the intrapersonal and interpersonal consequences of seeking out others when good things happen (i.e., capitalization). Two studies showed that communicating personal positive events with others was associated with increased daily positive affect and well-being, above and beyond the impact of the positive event itself and other daily events. Moreover, when others were perceived to respond actively and constructively (and not passively or destructively) to capitalization attempts, the benefits were further enhanced. Two studies found that close relationships in which one's partner typically responds to capitalization attempts enthusiastically were associated with higher relationship well-being (e.g., intimacy, daily marital satisfaction). The results are discussed in terms of the theoretical and empirical importance of understanding how people "cope" with positive events, cultivate positive emotions, and enhance social bonds.