Reliability and validity of the Self-Report Version of the Apathy Evaluation Scale in First-Episode Psychosis: Concordance with the Clinical Version at Baseline and 12 Months Follow-up

Understanding negative symptoms is a major challenge in schizophrenia research and treatment (Kirkpatrick et  al., 2006; Montgomery and van Zwieten-Boot, 2007; Marder and Galderisi, 2017). Methodological improvements of assessments may help research, and one possible solution could be to include self-reports. However, nearly all studies of negative symptoms have relied on assessments made by observers; re latively few have evaluated the subjective experience of people with psychosis (Selten et al., 1993; Park et al., 2012; Llerena et al., 2013; Engel and Lincoln, 2016; Dollfus et al., 2016).

Source: Psychiatry Research - May 30, 2018 Category: Psychiatry Authors: Ann Faerden, Siv Hege Lyngstad, Carmen Simonsen, Petter Andreas Ringen, Oleg Papsuev, Ingrid Dieset, Ole A Andreassen, Ingrid Agartz, Stephen R Marder, Ingrid Melle Source Type: research