Fairness in competitive games such as the Ultimatum Game is often defined theoretically. According to some of the literature, in which fairness is determined only based on resource allocation, a proposal splitting resources evenly (i.e., 5:5) is generally assumed as fair, and minimal deviation...

A war consists of multiple battles, yet the theoretical literature of International Relations has given little attention to how battles relate within a war. By integrating two ultimatum games with private information played by an Aggressor and a Defender, we develop bargaining models of war with...

Do White and Black Americans differ in their response to fair versus unfair treatment, and do these reactions depend on whether treatment is intentional? We study an ultimatum game in which we non-deceptively vary three dimensions: racial identities of participants, offer inequality, and whether...

Using a large-scale incentivized trust game experiment conducted across all 27 EU member states, we find that sexual minorities exhibit greater prosocial behaviour toward another vulnerable group but not toward an unknown counterpart, compared to heterosexual individuals. The observed effects...

Deliberative decision-making is often proposed as a mechanism to mitigate polarization in democratic processes. However, empirical evidence remains mixed, with some studies suggesting that deliberation among like-minded individuals can drive preference shifts toward extremes. We use a...