Head of Impact at ProVeg International, where I lead monitoring, evaluation and learning across six impact areas and 14 country offices. Behavioural scientist by training (PhD) and previously Deputy Director of Experimental Research at Yale, directing experimental behavioural research across the US, UK and India, and Senior Advisor to DEFRA's Strategic Behavioural Insights Team.

My research sits at the intersection of behaviour change and systems change: demand reduction in the illegal wildlife trade, climate communication and activism, and the social diffusion of plant-based diets. ~1,400 citations, h-index 20. Mostly I care about whether interventions actually work, and whether anyone bothered to check.