The Inventory of Depressive Symptoms and the Quick Inventory of Depressive Symptoms (IDS and QIDS)   Rush et al., 1986; Rush, Gullion, Basco, Jarrett, & Trivedi, 1996; Rush et al., 2003). T he IDS/QIDS can be used as a screening tool; the QIDS is also appropriate to use as a diagnostic tool and to monitor symptom change over time (IDS-QIDS.org, 2013). The IDS/QIDS has not been used with adolescents, nor does a separate adolescent version exist. The IDS (30-item) and QIDS (16-item) are self- and clinician-report measures assessing depressive symptoms in adults. The briefer QIDS queries for only the nine major depressive disorder domains outlined in the Diagnostic and Statistical Manual of Mental Disorders 4 th ed, Text Revision (DSM-IVTR, American Psychiatric Association, 2010), where the IDS queries for these domains as well as associated symptoms such as anxiety and irritability. Each item is rated from zero (“does not feel sad”) to three (“feels intensely sad virtually all the t