“…Rumination, the tendency to perseverate about the symptoms, causes, and consequences of negative mood, is a cognitive vulnerability that has been the focus of considerable research and one that has been consistently linked to concurrent and future levels of children’s depressive symptoms and disorders (see Rood, Roelofs, Bogels, Nolen-Hoeksema, & Schouten, 2009 for review). Originally proposed as a way of explaining risk for depression and the emergence of sex differences in depression in adolescence (Nolen-Hoeksema & Girgus, 1994), a growing body of research shows that rumination is also associated with increased risk of anxiety (Muris, Fokke, & Kwik, 2009; Muris, Roelofs, Meesters, & Boomsma, 2004), leading some researchers to propose that rumination is a transdiagnostic variable for anxiety and depression, rather than a cognitive vulnerability specific to depression (Ehring & Watkins, 2008; Nolen-Hoeksema, Wisco, & Lyubomirsky, 2008). …”