-The games started well, but then the boys called each other names like "stinkers" and "cheaters". In this stage, solidarity increased within each group, also showing hostility to the other group (they stole the other groups flag and set fire to it).
-During a two-day cooling off period, the boys listed features of the two groups- they tended to attribute positive characteristics to their in-group, and negative characteristics to their out-group.
-Then, researchers tried to stop the conflict. Initial attempts failed, so then they got them to work together towards a common goal.
-Some situations they were put into include pulling a broken down truck. This eased tension between the groups, which resulted in less negative ratings of the other group and no longer any intergroup hostility.