Introduction to the Special Issue: International Responses to Prevention Intervention Research During Human Ecosystem Disruptions.

For decades, human ecosystem disruptions (HEDs), including pandemics, natural disasters, and socio-economic crises, have shaped national and international responses affecting everyday life. These disruptions present challenges and opportunities for prevention science to address emerging behavioral and mental health research questions, intervention strategies, methodologies, analyses, and research collaboration. This paper introduces a special issue that aims to document examples of how prevention science research teams had (1) globally improved health and well-being through swift, scientifically based responses during HED events and (2) advanced our understanding of the conduct and outcomes of prevention intervention research during crises such as pandemics, natural disasters, and socio-economic crises. The issue presents six research studies conducted in over ten different countries (e.g., Australia, Mexico, China). This issue includes original empirical and descriptive work that addressed HED implications for preventive interventions at within-country and cross-national levels. The findings hold potential applications for responses during current and future pandemics and natural disasters. Participants reflected on methodological and contextual considerations during HEDs, such as navigating travel restrictions, adapting ongoing research efforts to accommodate scientific learning during disruptions, and assessing the impact of policies redistributing preventive resources during and after a HED.