If you put males together for a short period of time and give them something to compete for, they will form a team of us vs. them. This was famously illustrated by Muzafer Sherif’s “Robbers Cave Experiment.” Social psychologists separated two groups of boys and forced them to compete. Each group of boys created a sense of us based on what they liked about themselves or how they wanted to imagine themselves. They also created negative caricatures of the other group. The groups became hostile toward each other. However, when the researchers gave them a good enough reason to cooperate, the
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