UCSB Psychology Ph. D. Pietraszewski, Professors Cosmides & Tooby study cooperation and alliance detection system

February 10, 2014

It’s widely acknowledged that a common threat unites people. Individuals who were previously separated by social class, race or ethnicity come together, forming new cooperative alliances to defeat a common enemy. But does it take an external threat — an attack like Pearl Harbor or 9/11 — to make these social divisions melt away?

Related Links