© The Author(s) 2013 Reprints and permission:

Roughly 1 in 10 adolescents will experience major depression or dysthymia by age 18 (Merikangas et al., 2010). Adolescents with depressive symptoms who do not meet Diagnostic and Statistical Manual of Mental Disorders (fourth edition) crite-ria for depression nonetheless experience significant impair-ment (e.g., González-Tejera et al., 2005) and are at elevated risk for later development of major depression and suicida