title: Motivation and Pleasure Scale-Self-Report (MAP-SR): Validation of the German version of a self-report measure for screening negative symptoms in schizophrenia.
abstract: OBJECTIVE
  Validated self-report instruments could provide a time efficient screening method for negative symptoms in people with schizophrenia. The aim of this study was to examine the psychometric properties of a German version of the Motivation and Pleasure Scale-Self-Report (MAP-SR) which is based on the Clinical Assessment Interview for Negative Symptoms (CAINS).
  
  
  METHODS
  In- and outpatients (N=50) with schizophrenia or schizoaffective disorder were assessed with standardized interviews and questionnaires on negative and positive symptoms and general psychopathology in schizophrenia, depression, and global functioning.
  
  
  RESULTS
  The German version of the MAP-SR showed high internal consistency. Convergent validity was supported by significant correlations between the MAP-SR with the experience sub-scale of the CAINS and the negative symptom sub-scale of the Positive and Negative Syndrome Scale. The MAP-SR also exhibited discriminant validity indicated by its non-significant correlations with positive symptoms and general psychopathology, which is in line with the findings for the original version of the MAP-SR. However, the MAP-SR correlated moderately with depression.
  
  
  CONCLUSIONS
  The German MAP-SR appears to be a valid and suitable diagnostic tool for the identification of negative symptoms in schizophrenia.
authors.affiliation: Department of Clinical Psychology and Psychotherapy, Institute of Psychology, University of Hamburg, Von-Melle-Park 5, 20146 Hamburg, Germany. Electronic address: maike.engel@uni-hamburg.de.
authors.forename: Maike
authors.initials: M
authors.lastname: Engel
authors.affiliation: Department of Clinical Psychology and Psychotherapy, Institute of Psychology, University of Hamburg, Von-Melle-Park 5, 20146 Hamburg, Germany. Electronic address: tania.lincoln@uni-hamburg.de.
authors.forename: Tania Marie
authors.initials: TM
authors.lastname: Lincoln
mesh_terms: D000328:Adult; D003863:Depression / Q000150:complications / Q000175:diagnosis; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D009042:Motivation; D057181:Pleasure; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D011594:Psychometrics; D011618:Psychotic Disorders / Q000175:diagnosis*; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000150:complications / Q000175:diagnosis*; D012565:Schizophrenic Psychology; D057566:Self Report