Nudges have been increasingly deployed to deliver climate policies in the last decade. Recent evidence shows nudges are hard to scale–up. So can we use nudges more effectively, or should we rely on other tools of behaviour change? We argue that reflective strategies can enhance nudges by...

Nudging people towards sustainable diets can help mitigate agricultural emissions. Recent debate suggests “nudges” can have heterogeneous treatment effects in the population, including some backfire effects. So, can we identify this heterogeneity and design more effective nudges for...