This paper studies how imposing norms on contribution behavior affects individuals' intrinsic motivation. We consider … legally a tax. We design a randomized field experiment with treatments informing individuals that the levy is a tax. We …, communicating the legal norm results in a significant crowd-out of intrinsic motivation. In contrast, strongly intrinsically …

This chapter presents some insights from basic behavioural research on the role of human pro-social motivation to … motivation can sustain cooperation if enough people cooperate but can jeopardise social order if many others follow selfish …

This chapter presents some insights from basic behavioural research on the role of human pro-social motivation to … motivation can sustain cooperation if enough people cooperate but can jeopardise social order if many others follow selfish …