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 …

The paper studies the impact of altruism on Agent's motivation in career concerns model. The paper shows the new … channel of interaction between intrinsic and extrinsic motivation: while the literature usually argues that intrinsic … motivation can be crowded out by the extrinsic incentives, I show that crowding-out effect can go in the opposite direction …

strongly influence participation and voting. However, social or expressive motives, such as stated altruism, environmental …