(Airs 1/12) In this episode of Passion Struck, host John R. Miles joins psychologist Rick Hanson and Harvard’s Joshua Greene to unpack us vs them psychology, why our brains are hardwired for tribal division in a connected world, and how neuroscience offers a path to broader belonging and compassion. At a time of rising polarization, this conversation reveals the evolutionary roots of outrage and exclusion and practical ways to expand your moral circle without erasing differences. Framed around the Pods Fight Poverty initiative, it turns insight into real impact for families in extreme poverty. Together, they explore how moral psychology and neuroscience explain why tribal thinking feels so automatic, why belonging and mattering are biological needs, and how we can expand the moral circle without denying fundamental differences.
Why the Human Brain Is Wired for Us vs Them Psychology
Joshua Greene explains that us vs them psychology evolved for tribal survival: internal cooperation, external vigilance. Today, it amplifies polarization as disagreement feels like an existential threat. Human moral systems developed to help small groups cooperate internally while competing externally, allowing early societies to survive in harsh environments. Morality, in this sense, evolved as a coordination tool. It helped people trust those inside the group and remain vigilant toward those outside it.
The challenge today is that these ancient instincts are now operating in a hyperconnected world. The brain still reacts as if disagreement signals danger, even when the threat is ideological rather than physical. What once protected us now fuels polarization, outrage, and moral certainty. Recognizing this wiring does not excuse harmful behavior, but it gives us the awareness needed to interrupt it.
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