Inference of trustworthiness from intuitive moral judgments

Area of Science:

• Moral psychology
• Evolutionary ethics
• Social decision-making

Background:

• Moral judgments are crucial for human cooperation, often relying on intuitive, automatic processes.
• Intuitive moral judgments frequently align with deontological ethics, where certain actions are inherently wrong.
• The evolutionary basis for this deontological tendency remains an open question.

Purpose of the Study:

• To investigate the functional explanation behind the prevalence of deontological moral judgments.
• To test whether individuals expressing deontological judgments are more valued as social partners.

Main Methods:

• Conducted five studies examining social partner preferences.
• Assessed perceptions of morality and trustworthiness.
• Utilized economic games to measure trust levels.

Main Results:

• Individuals making deontological judgments were consistently preferred as social partners.
• These individuals were perceived as more moral and trustworthy.
• Higher trust was observed in economic games involving deontological judgers.

Conclusions:

• Deontological moral judgments confer an adaptive advantage by enhancing partner choice.
• This supports a partner choice account for the evolution of moral intuitions.
• Deontological intuitions may be an evolutionarily selected trait favoring cooperation.