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When I discuss my concern that psychologists and behavioral economists rely on a thin and peculiar slice of humanity in order to understand HUMAN psychology, they often reply with the strong intuition that they (but perhaps not others) are studying “basic processes,” etc.
To assess how difficult it is to identify these “basic process” without both evolutionary theory and serious cross-cultural research, let’s put aside psychology and focus on physiology and anatomy. Surely, those are “basic.” #WEIRDPeopleProblem
WEIRD medical research suggests that inflammation is a risk factor for heart disease. But, when Gurven, Kaplan et al. studied the Tsimane (Amazonia), they found that the Tsimane have HIGH inflammation but virtually no heart disease. The Tsimane should have terrible heart disease. 
