Too fatigued to care: Ego depletion, guilt, and prosocial behavior

Although guilt feels bad to the individual, it is good for society because guilty feelings can prompt people to perform good deeds. This study tests whether fatigue decreases guilty feelings and subsequent prosocial behavior. Participants were randomly assigned to a depletion condition in which they watched a movie about butchering animals for their meat or skin and were told to express no emotions, or to a no-depletion condition in which they watched the same movie, but could express their emotions. Having participants play a game in which another person was punished for their errors induced guilt. Finally, participants played a dictator game in which they could leave money for the next participant. After the experiment, participants could also anonymously donate money to an anti-AIDS charity. The results showed that depleted participants felt less guilty than did non-depleted participants, and the less guilty participants felt the less helpful they were.