title: The concept of negative symptoms.
authors.affiliation: MRC Social Psychiatry Unit, Institute of Psychiatry, London.
authors.forename: J K
authors.initials: JK
authors.lastname: Wing
mesh_terms: D006801:Humans; D008137:Longitudinal Studies; D009042:Motivation; D011569:Psychiatric Status Rating Scales; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology; D012931:Social Environment