Automatic coping mechanisms in committed relationships: Increased interpersonal trust as a response to stress

In order to maintain a satisfying committed relationship, individuals have to cope successfully with stressors, especially those that concern both partners (i.e., dyadic stress). The aim of our study is to investigate automatic up-regulation of interpersonal trust as an adaptive response to relationship challenges. In three experiments, we manipulated relationship stress by instructing half of the participants to imagine a relationship threat (Experiments 1 and 2: a longer period of physical separation, Experiment 3: any possible stressor that could challenge their relationship). Participants subsequently played an anonymous, one-shot trust game (Experiments 1 and 2) or rated the trustworthiness of unknown faces (Experiment 3) to assess automatic up-regulation of interpersonal trust. Results revealed that participants in the relationship stress condition displayed higher trusting behavior in the trust game, and rated the trustworthiness of unknown faces as higher compared to participants in the control condition. These findings suggest that interpersonal trust is situationally and automatically attuned to relationship demands and challenges.