We study the effect of repeated opportunities to behave pro-socially on aggregate pro-social behavior in two laboratory experiments and in field data on charitable giving. In the first experiment we show that two consecutive pro-social decisions (implemented as donations to a charity) lead to...

Carbon taxes are a prominent policy instrument for decreasing the consumption of CO2-intensive goods in order to reduce the negative external effects involved in the production or consumption of such goods. A tax leads to higher consumer prices, which typically lowers consumption. However, in...

This paper reports evidence from a field experiment investigating households' electricity saving behavior. We motivated households' efforts to save electricity via pro-environmental incentives that did not affect people's monetary utility but targeted their environmental preferences. The results...

The provision of feedback about individual electricity consumption is a widely used approach to promote pro-environmental behavior. This form of feedback typically invokes social comparisons by informing households about their aggregate electricity consumption relative to others. While previous...

Feedback interventions are considered a promising instrument to promoteenergy conservation among households and thus, to mitigate climate change. Need. However,it remains unclear whether their effectiveness can be increased by incentivizing thepursuit of energy-savings goals. In this paper, we...

Solidarity in teamwork situations is important for the success and longevity of teams. This paper studies how helping group members is affected when groups are randomly merged and increase in size. Group mergers put social norms that are prevailing in previously small groups to the test as new...

Is competition perceived as a fair procedure? We report data from laboratory experiments where a powerful buyer can trade with one of several sellers. Sellers who feel shortchanged can engage in counterproductive behavior to punish the buyer. We find that the same unfavorable terms of trade...

Is competition perceived as a fair procedure? We report data from laboratory experiments where a powerful buyer can trade with one of several sellers. Sellers who feel shortchanged can engage in counterproductive behavior to punish the buyer. We find that the same unfavorable terms of trade...