Designing Intervention that Works Beyond the Manual: A Unique Approach to Mental Health First Aid Intervention Development

Background: Mental health challenges are a growing global issue, with a significant gap between those needing care and those receiving it. Traditional Mental Health First Aid (MHFA) interventions often rely on rigid approaches that may not fully address diverse population needs. This study addresses limitations in existing MHFA packages by developing a culturally sensitive, adaptable intervention.  Objective: To design and validate a novel MHFA intervention package that is flexible, culturally relevant, and effective in improving mental health literacy and support across diverse populations.  Methods: The intervention was developed through a multi-stage process including conception, development, validation, rectification, and execution. Content was created based on the Indian government's CHO Module, incorporating culturally relevant scenarios and interactive elements. Validation involved expert review and calculation of a Content Validity Index. The package was translated into Bengali and pilot tested with 20 Bengali-speaking participants from diverse backgrounds.  Results: The intervention achieved a high Cumulative Content Validity Index of 0.97, indicating strong expert consensus on its relevance and appropriateness. Pilot testing revealed improved understanding of mental health concepts, enhanced confidence in providing support, and increased awareness of resources among participants. The use of psychodramas and multilingual materials proved particularly effective in fostering understanding. Conclusion: This novel MHFA intervention package demonstrates potential to bridge gaps in mental health education and empower non-professionals as first responders. Its emphasis on cultural sensitivity, adaptability, and practical relevance addresses critical limitations in existing approaches. While showing promise in enhancing mental health awareness and reducing stigma, further research is needed to assess long-term impacts on behaviour and mental health outcomes.