Research finds the hormone of trust has limits

(PhysOrg.com) -- Oxytocin is a hormone produced by the hypothalamus in the brain, and has been shown to make people trust each other more and promote feelings of love. But this hormone has now been found to have limits, since it promotes love and trust only towards people of the same "in-group" and not towards people who are seen as different. Psychologists have therefore concluded it is involved in ethnocentrism.

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