RESUMEN
Recent decades have seen a growth in theoretical frameworks focusing on systems, context and the dynamic interplay of multiple variables, stimulating interest in complementary research and programme evaluation methods. With resilience theory now emphasising the complex and dynamic nature of resilience capacities, processes and outcomes, resilience programming stands to benefit from approaches such as design-based research and realist research/evaluation. The aim of this collaborative (researcher/practitioner) study was to explore how such benefits can be achieved when programme theory spans individual, community and institutional outcomes, with a focus on the reciprocal processes involved in effecting change across the social system. The context of the research was a regional (Middle East and North Africa) project operating in contexts with an escalated risk of marginalised young people being drawn into illegal/harmful activity. The project's youth engagement and development approach combined participatory learning, skills training, and collective social action, adapted for diverse localities and during the COVID-19 crisis. Quantitative measures of individual and collective resilience were at the centre of a set of realist analyses evidencing systemic connections in changes to individual, collective and community resilience. Findings demonstrated the value, challenges and limitations of the applied research approach for adaptive, contextualised programming.