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 …

-interest, providing strong evidence for pocketbook voting. However, social preferences like altruism, public good considerations and …

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 …

and social norms, and trust. In a preregistered online experiment (n = 1,038), we find that biased institutions reduce …

and social norms, and trust. In a preregistered online experiment (n = 1,038), we find that biased institutions reduce …

vary. The experiment implements two marginal return types, low and high, and uses the information that members have about …

it becomes scarce. In the second, restraint serves to conceal the actor's intrinsic motivation. In both cases, not …