title: The negative symptom assessment: a new instrument to assess negative symptoms of schizophrenia.
authors.forename: L D
authors.initials: LD
authors.lastname: Alphs
authors.forename: A
authors.initials: A
authors.lastname: Summerfelt
authors.forename: H
authors.initials: H
authors.lastname: Lann
authors.forename: R J
authors.initials: RJ
authors.lastname: Muller
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D011569:Psychiatric Status Rating Scales; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology