The Closed Partisan Mind traces the roots of partisan polarization to psychological closed-mindedness in the electorate and the changing perception of politics created by polarized political leaders and the new media environment. American politics today can be defined by the intense and increasingly toxic divide between Democrats and Republicans. Matthew D. Luttig explores why so many Americans have endorsed this level of political conflict. Luttig illustrates how the psychological need for closure leads people, regardless of whether they identify as Democrat or Republican, to express more...