“…As such, good quality mental health care for psychotic patients is characterized by a detailed and broad assessment of patient problems and needs. To facilitate this type of in-depth assessment of negative symptoms in psychotic disorders, an extraordinary range of measures have been produced (Martins, Carvalho, Castilho, Pereira, & Macedo, 2015). Among the most frequently used of these measures are the Positive and Negative Syndrome Scale (PANSS; Kay, Fiszbein, & Opler, 1987), the Scale for the Assessment of Negative Symptoms (SANS; Andreasen, 1982), and the Negative Symptom Assessment (NSA; Alphs, Summerfelt, Lann, & Mueller, 1989).…”