SCHIZOPHRENIA AND RELATED DISORDERS: Edited by Lynn E. DeLisi and W. Wolfgang FleischhackerCategorizing and assessing negative symptomsBucci, Paola; Galderisi, SilvanaAuthor Information Department of Psychiatry, University of Campania ‘L. Vanvitelli’, Naples, Italy Correspondence to Prof. Silvana Galderisi, Department of Psychiatry, Largo Madonna delle Grazie, 80138 Naples, Italy. Tel: +39 081 566 6504; fax: +39 081 566 6523; e-mail: [email protected] Current Opinion in Psychiatry: May 2017 - Volume 30 - Issue 3 - p 201-208 doi: 10.1097/YCO.0000000000000322 Buy Metrics Abstract Purpose of review To provide a review on studies published in the last year relevant to the categorization and assessment of negative symptoms. Recent findings Recent research supported the validity of the ‘deficit/non-deficit schizophrenia’ categorization. Few studies confirmed the validity of the category ‘persistent negative symptoms’, whereas no recent study explored the validity of the category ‘predominant negative symptoms’. The two-factor structure of the negative dimension is supported by studies reporting different correlates for the two subdomains: diminished expression and avolition/apathy. The need to further split avolition/apathy in two distinct components, that is anhedonia and amotivation, is confirmed in recent papers. Additional approaches to the assessment of negative symptoms have been proposed, including the self-assessment of negative symptoms, and the evaluation of negative symptoms in daily life and their assessment by means of computerized analyses. Summary Negative symptoms represent an unmet need in the care of schizophrenia, as they are associated to poor response to available treatments and to poor functional outcome. Their accurate categorization and assessment represent a major challenge for research on neurobiological substrates and new treatment strategies. Copyright © 2017 Wolters Kluwer Health, Inc. All rights reserved.