The Triangular Theory of Love (measured with Sternberg’s Triangular Love Scale – STLS) is a prominent theoretical concept in empirical research on love. To expand the culturally homogeneous body of previous psychometric research regarding the STLS, we conducted a large-scale cross-cultural study with the use of this scale. In total, we examined more than 11,000 respondents, but as a result of applied exclusion criteria, the final analyses were based on a sample of 7332 participants from 25 countries (from all inhabited continents). We tested configural invariance, metric invariance, and scalar invariance, all of which confirmed the cultural universality of the theoretical construct of love analyzed in our study. We also observed that levels of love components differ depending on relationship duration, following the dynamics suggested in the Triangular Theory of Love. Supplementary files with all our data, including results on love intensity across different countries along with STLS versions adapted in a few dozen languages, will further enable more extensive research on the Triangular Theory of Love.

Applying the actor–partner interdependence model to 114 couples’ data, we examined the link between partners’ change in reported dyadic coping responses from 6 months before marriage to 12 months after marriage and change in the perceptions of the other’s dyadic coping responses, the role of these associations for partners’ change in relationship satisfaction, and the role of gender in these relations. Results highlighted both accuracy and projection effects in partners’ perceptions. Moreover, one’s perceptions of the other’s dyadic coping responses mediated the effect of both one’s own and the others’ reported dyadic coping behaviors on one’s satisfaction. Findings are discussed in light of the implications for the study of dyadic coping and partner support as well as for intervention.

Following the global outbreak of COVID-19 in March 2020, individuals report psychological distress associated with the “new normal”—social distancing, financial hardships, and increased responsibilities while working from home. Given the interpersonal nature of stress and coping responses between romantic partners, based on the systemic transactional model this study posits that perceived partner dyadic coping may be an important moderator between experiences of COVID-19 psychological distress and relationship quality. To examine these associations, self-report data from 14,020 people across 27 countries were collected during the early phases of the COVID-19 pandemic (March–July, 2020). It was hypothesized that higher symptoms of psychological distress would be reported post-COVID-19 compared to pre-COVID-19 restrictions (Hypothesis 1), reports of post-COVID-19 psychological distress would be negatively associated with relationship quality (Hypothesis 2), and perceived partner DC would moderate these associations (Hypothesis 3). While hypotheses were generally supported, results also showed interesting between-country variability. Limitations and future directions are presented.

A few studies examine patients' (and partners') individual and relational functioning after an acute cardiac event and no research focuses on the individual and relational factors associated with the patient's engagement in his/her disease management. The present study aimed at exploring these variables in male and female patients as well as their partners. We pursued our objectives by taking advantage of a dyadic research design that involved both partners in the data collection, when present, and by including women patients in the sample. Findings showed that patients in a couple, compared to single patients, perceive that their illness had less serious consequences for their life and they were more engaged in their health care; that patients and partners showed comparable levels of distress; and that less depressed, more confident, and better informed patients were more likely to actively engage in their treatment. Findings are discussed in light of their implications for clinical practice.