“…Of the studies identified, only a small number ( n = 8) included negative symptoms as a primary treatment outcome (Daniels, 1998; Dobson, McDougall, Busheikin, & Aldous, 1995; Dyck et al, 2000; Grant, Huh, Perivoliotis, Stolar, & Beck, 2012; Hayes, Halford, & Varghese, 1995; Klingberg et al, 2009, 2011; Thorup et al, 2005; Turkington, Dudley, et al, 2006; Turkington, Kingdon, et al, 2006), and only one study (Klingberg et al, 2009, 2011) tested an intervention explicitly designed to alleviate negative symptoms. Instead, the studies reported here evaluated psychosocial interventions for schizophrenia more broadly, and findings regarding negative symptoms were often only briefly mentioned.…”