“…First, we discuss whether and how political sophistication or expertise influences the likelihood that citizens will think both deeply and objectively about their political options. Although expertise facilitates political understanding, it can also make it easier for citizens to defend their political attitudes through motivated forms of reasoning (Bartels, 2008;Duch, Palmer, & Anderson, 2000;Gaines, Kuklinski, Quirk, Peyton, & Verkuilen, 2007;Jacobson, 2010;Mercier & Sperber, 2011;Taber & Lodge, 2006;Wells, Reedy, Gastil, & Lee, 2009). Second, we consider the possibility that elites and citizens have become more politically polarized-with liberals taking more left-of-center positions on policy issues and conservatives taking more right-of-center positions-over the past several decades (see Abramowitz, 2010;Fiorina, Abrams, & Pope, 2010;Krochik & Jost, 2010;Levendusky, 2009;McCarty, Poole, & Rosenthal, 2006), and ask whether and how a more ideologically polarized environment has affected political cognition.…”