... Social anxiety disorder, or social phobia, is one of the most frequent mental disorders in the world, after depression and alcohol abuse (Davidson, Hughes, George, & Blazer, 1993Kessler, et al., 1994;Kessler, Stang, Wittchen, Stein, & Walters, 1999;Lecrubier, Wittchen, Faravelli, Bobes, Patel, & Knapp, 2000;Magee, Eaton, Wittchen, McGonagle, & Kessler, 1996;Schneier, Johnson, Hornig, Liebowitz, & Weissman, 1992;Stein, Walker, & Forde, 1994;Weinstock, 1999), with which, in turn, it has high comorbidity (Chartier, Walker, & Stein, 2003;Erwin, Heimberg, Juster, & Mindlin, 2002;Fehm, Beesdo, Jacobi, & Fiedler, 2008;Fogler, 2005;Ham, & Hope, 2005;Lampe, Slade, Issakidis, & Andrews, 2003;Merikangas, & Angst, 1995;Morris, Stewart, & Ham, 2005;Swinson, 2005;Weinstock, 1999;Yonkers, Dyck, & Keller, 2001). Social phobia is highly comorbid with other anxiety disorders (e.g., panic disorder, agoraphobia, specific phobia) or other mental disorders. ...