The study aimed to understand why individuals get involved in conflicts between groups. They created a new game called the Intergroup Prisoner’s Dilemma – Maximizing Difference (IPD-MD). In this game, people had to decide how to spend their money: on helping their own group or hurting the opposing group. The results showed that most players chose to help their own group rather than harm the other. Additionally, when players could talk to their group members before playing, they cooperated more within their group but not against the other group. In a similar game called the Intergroup Prisoner's Dilemma (IPD), players mainly focused on competing against the other group. So, the findings suggest that in conflicts, people lean more towards supporting their own group rather than attacking the other group.