Third-party punishers are rewarded, but third-party helpers even more so

Area of Science:

• Behavioral Economics
• Social Psychology
• Evolutionary Game Theory

Background:

• Individuals can gain benefits from a reputation for punishment, encouraging future cooperation.
• Alternatively, punishers may receive bystander support if their actions are perceived as just and altruistic.

Purpose of the Study:

• To investigate whether third-party punishers are rewarded by uninvolved bystanders for their investments.
• To explore the conditions under which third-party punishment is supported by social rewards.

Main Methods:

• Participants played a dictator game, with a 'third party' deciding whether to punish a selfish or fair dictator, help the receiver, or do nothing.
• A 'bystander' then observed the third party's action and decided whether to reward the third party.
• Experimental conditions varied the third party's options: punishment only, helping only, or a choice between punishment and helping.

Main Results:

• Third parties who punished selfish dictators received more rewards from bystanders than those who did nothing.
• Third parties who helped the receiver were rewarded even more by bystanders than those who punished.
• This indicates that while punishment can be rewarded, prosocial helping behavior garners greater social rewards.

Conclusions:

• Third-party punishment can be sustained through indirect reciprocity, as bystanders reward such actions.
• Individuals may prioritize investing in positive, helpful actions over punishment due to greater social rewards.
• These findings offer insights into the evolution of cooperation and the prevalence of prosocial behaviors.