title: Concordance of self- and observer-rated motivation and pleasure in patients with negative symptoms and healthy controls.
abstract: This study examined the validity of using a self-rating scale for assessing the motivation and pleasure domain of negative symptoms in the general population by examining the concordance of self- and observer-rated negative symptoms in a healthy sample and by comparing it with a patient sample. The motivation and pleasure domain of negative symptoms was assessed using the observer-rated Clinical Assessment Interview for Negative Symptoms (CAINS) and the self-rated Motivation and Pleasure Scale-Self-Report (MAP-SR). We found 52.9% of the healthy individuals and 46% of the patients to have relatively equal self- and observer-ratings. Despite the absence of extreme discrepancies, 31.4% of the healthy individuals and 14% of the patients rated their negative symptoms as more severe, whereas 15.7% of the healthy individuals and 40% of the patients rated them as less severe than the observers. By using self-ratings in combination with observer-ratings, possible discrepancies can be uncovered, which may be relevant for the successful treatment of negative symptoms.
authors.affiliation: University of Hamburg, Department of Clinical Psychology and Psychotherapy, 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: University of Hamburg, Department of Clinical Psychology and Psychotherapy, Von-Melle-Park 5, 20146 Hamburg, Germany. Electronic address: tania.lincoln@uni-hamburg.de.
authors.forename: Tania M
authors.initials: TM
authors.lastname: Lincoln
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D015588:Observer Variation; D057181:Pleasure; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000175:diagnosis*; D012565:Schizophrenic Psychology; D057566:Self Report
keywords: Assessment; Concordance; Negative symptoms; Schizophrenia; Self-rating