Anhedonia in prolonged schizophrenia spectrum patients with relatively lower vs. higher levels of depression disorders: Associations with deficits in social cognition and metacognition |
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| Affiliation: | 1. Indiana University-Purdue University Indianapolis, Department of Psychology, 402 N. Blackford St., LD 124, Indianapolis, IN 46202, United States of America;2. University of Illinois at Chicago, Department of Psychiatry, 1747 West Roosevelt Road, 279, Chicago, IL 60608, United States of America;3. VISN 4 Mental Illness Research, Education, & Clinical Center (MIRECC), VA Pittsburgh Healthcare System, 4100 Allequippa St., Pittsburgh, PA 15219, United States of America;4. University of Pittsburgh, Department of Psychiatry, 3811 O''Hara Street, Pittsburgh, PA 15213, United States of America;1. Indiana State University, Department of Psychology, Terre Haute, IN, USA;2. Department of Psychology, Bar-Ilan University, Ramat-Gan, Israel;3. Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA;4. Department of Psychology, Indiana University–Purdue University Indianapolis, Indianapolis, IN, USA;5. Indiana University School of Medicine, Department of Psychiatry, Indiana University Psychotic Disorders Program;6. Roudebush VA Medical Center, Indianapolis, IN, USA;7. University of Indianapolis, School of Psychological Science, Indianapolis, IN, USA |
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| Abstract: | This study has sought to explore whether there are at least two subtypes of anhedonia in schizophrenia: one closely linked with depression and another that occurs in the absence of depression which is related to a general paucity of internal experience. Participants were 163 adults with schizophrenia who completed assessments of depression, anhedonia, executive functioning, positive and negative symptoms, social cognition and metacognition. A cluster analysis based on participants’ depression and anhedonia symptom scores produced three groups: High Depression/High Anhedonia (n = 52), Low Depression/Low Anhedonia (n = 52), and Low Depression/High Anhedonia (n = 59). An ANCOVA and post hoc comparisons controlling for positive and negative symptoms found that the Low Depression/High Anhedonia group had poorer metacognition and social cognition than other groups. These findings point to the possibility of a subtype of anhedonia in schizophrenia, one occurring in the relative lesser levels of depression, and tied to deficits in the ability to think about oneself and others. |
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| Keywords: | Schizophrenia Anhedonia Metacognition Social cognition Depression |
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