No / Objectives: The sociocultural model of stress and coping, which despite receiving support from several studies conducted with diverse ethnic groups, has yet to be tested longitudinally or used within the context of positive caregiver outcomes. The aim of the current study was to test a specific component of the model, which posits that caregiver coping will be influenced by the cultural value of familism (feelings of solidarity and loyalty among family members), which will in turn affect caregiver outcomes. Method: A questionnaire was completed by 123 family caregivers in the UK assessing familism, use of coping strategies, caregiver gains, anxiety and depression at three time points over nine months. Results: Mediation analysis followed guidelines proposed by Baron and Kenny. Religious coping and positive reframing at time 2 (T2) were found to significantly mediate between familism values at time 1 (T1) and caregiver gains at time 3 (T3). Behavioural disengagement at T2 was found to mediate between familism at T1 and caregiver depression atT3. Additionally familism was found to be positively associated with both negative and positive aspects of caregiving. Conclusion: Our longitudinal findings suggest that interventions and services acknowledging caregiver values and the associated coping responses may prove beneficial.