How Well Do Nudges Work?
The research literature on nudge effectiveness is growing. 2022 started with a new PNAS article reporting a meta analysis of 455 effect sizes from 214 publications. Here's a short summary.
Do Lab Studies Replicate in the Field? The Case of Simplified Nutrition Labels
There is a growing concern that the academic literature, because of publication biases and other limitations of single-shot, lab-based studies, overstates the power of nudges in real life. We examined this issue in a 10-week RCT in 60 supermarkets comparing 4 front-of-pack simplified nutrition labels. The good news is that the ordering of the nutrition labels was the same as in published lab-based studies. The bad news is that our effect sizes were, on average, 17 times smaller than in the published literature.
Why We Know so Little About Culture and Decision-Making
There is a lot of evidence on the variation of human experience and that economic, social and linguistic environments strongly shape people’s behaviour, motivations and preferences. Despite this, these topics have not received a lot of attention in decision making psychology. In this article, I shed some light on the background of why this is the case.
Does “Irrationality” Travel?
As the enthusiasm for applied behavioural science spreads across the globe, it is time to think how well "irrationality" travels. This is the start of an article series exploring the impact of factors such as cultural context on decision making - and how our understanding of the human mind is based on a thin slice of humanity.