Env. & Dev. Econ. Research SeminarNorm-based feedback on household waste: a large-scale field experiment in two Swedish municipalitiesClaes Ek
22. Januar 2020
Abstract: The last decade has seen a marked upsurge of research into interventions that aim to reduce resource use by providing users with information about their behavior compared to e.g. neighbors in their community. In two separate large-scale RCTs in western Sweden, we study the effect of such norm-based feedback on residual (unsorted) household waste. Our main feedback condition, which we term “static” feedback, replicates the standard design where each household’s own residual waste is compared with an average among roughly 100 nearby households. We also explore differently presented, “dynamic” feedback motivated by psychological evidence that norms focusing on changes in behavior, rather than snapshot pictures of consumption differences within a population, are more effective at reducing use. The results suggest relatively large reductions of 7-10%; however, there is no significant difference in effect size across the static and dynamic feedback conditions.