Is nonverbal communication capable of affecting economic outcomes? We study the effect of anticipated approval and disapproval, expressed through emoticons, on generosity and show that it discourages selfish behavior. In our experiment subjects play a one-shot dictator game at the end of which...

We conduct a field experiment to analyze the effect of deadline length on charitable tasks. Participants are invited to complete an online survey, with a donation going to charity if they do so. Participants are given either one week, one month or no deadline by which to respond. Completions are...

This paper studies psychological forward induction and the updating of beliefs in the lost wallet game (Dufwenberg & Gneezy, 2000), which is required to derive a prediction for guilt averse agents. Our experiment tests whether the second movers psychologically induct forward and update their...

This paper studies psychological forward induction and the updating of beliefs in the lost wallet game (Dufwenberg & Gneezy, 2000), which is required to derive a prediction for guilt averse agents. Our experiment tests whether the second movers psychologically induct forward and update their...

We conduct a field experiment to test the non-monotonic effect of deadline length on task completion. Participants are invited to complete an online survey in which a donation goes to charity. They are given either one week, one month or no deadline to respond. Responses are lowest for the...

We develop, and experimentally test, models of informal agreements. Agents are assumed to be honest but suffer costs of overcoming temptations. We extend two classical bargaining solutions -- split-the-difference and deal-me-out -- to this informal agreement setting. For each solution there are...

We propose a conjecture that self-serving but generous actions diminish the positively reciprocal response, compared to selfless generous actions. We embed our conjecture in Cox, Friedman & Sadiraj’s (2008) model of Revealed Altruism. According to Revealed Altruism reciprocal responses are...