Does couple identity mediate the stress experienced by caregiving spouses?

Abstract
For caregivers, the stress process is multifaceted, involving primary stressors, which stem directly from the needs of the patient, and secondary stressors, which relate to the subjective burden of caregiving. According to stress proliferation theories, both primary and secondary stressors can exacerbate caregiver distress. However, individuals vary considerably in their reactions to caregiving. This study explored whether seeing oneself as part of a couple and incorporating one's relationship into one's self-concept (couple identity) alleviates the negative effects of primary and secondary stressors on caregiver mental health. The sample comprised 92 healthy spouses who had been caregiving for a partner with a chronic physical illness for an average of 5.9 years. Results showed that couple identity partially mediated the effects of negative primary (i.e., relational deprivation and overload) and secondary (i.e., loss of self and captivity) role stressors, and fully mediated the effects of positive secondary role stressors (i.e., caregiver self-esteem and competence) on caregiver mental health. Viewing the relationship as an extension of oneself, or high levels of couple identity, may thus help to minimize the negative effects and maximize the positive effects of the caregiving experience on caregiver mental health.