Original ResearchPublished 8 October 2026Development and validation of a multidimensional behavioural change index and its application to farmer producer organisations in India: implications for sustainable smallholder food systemsBadigi Pavan Naik · Mahamaya Prasad Nayak · Bishnupriya Mishra · Abhiram Dash · Khitish Kumar Sarangi · Madhumita Jena · Indira Priyadarsini Pattnaik · Srabani GhosalFrontiers in Sustainable Food Systemsdoi 10.3389/fsufs.2026.1915367