Study Ties Political Leanings to Hidden Biases

By Shankar Vedantam
Washington Post Staff Writer
Monday, January 30, 2006

Put a group of people together at a party and observe how they behave. Differently than when they are alone? Differently than when they are with family? What if they're in a stadium instead of at a party? What if they're all men?

The field of social psychology has long been focused on how social environments affect the way people behave. But social psychologists are people, too, and as the United States has become increasingly politically polarized, they have grown increasingly interested in examining what drives these sharp divides: red states vs. blue states; pro-Iraq war vs. anti-Iraq war; pro-same-sex marriage vs. anti-same-sex marriage. And they have begun to study political behavior using such specialized
tools as sophisticated psychological tests and brain scans.

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