Brief ReportsClient and Clinical Utility of the Assessment of Personality DisordersWeekers, Laura C. MSc∗; Hutsebaut, Joost PhD∗; Kamphuis, Jan H. PhD∗,† Author Information ∗Viersprong Institute for Studies on Personality Disorders, Halsteren †Department of Clinical Psychology, University of Amsterdam, Amsterdam, the Netherlands. Send reprint requests to Laura C. Weekers, MSc, Viersprong Institute for Studies on Personality Disorders, De Beeklaan 2, 4661 EP Halsteren, the Netherlands. E-mail: [email protected]. The Journal of Nervous and Mental Disease: November 2021 - Volume 209 - Issue 11 - p 846-850 doi: 10.1097/NMD.0000000000001398 Buy Metrics Abstract Clinical utility and client utility are important desirable properties when developing and evaluating a new classification system for mental disorders. This study reports on four focus groups followed up by a Delphi study among clinicians working with clients with personality disorders (PD) and clients with PD themselves to harness both user groups' perspectives on the utility of PD diagnosis. Our findings show that the client and clinician views of the concept of utility were closely aligned and include aspects of transparency of communication and the ability of an assessment to enhance hope, curiosity, motivation, and insight into a client's personality patterns. Unique to clinicians' appraisal was the ability of an assessment to capture both vulnerabilities and resilience of clients and to give information about the prognosis in treatment. Unique to clients' appraisal was the ability of an assessment to be destigmatizing and collaborative. These findings may serve to expand our definition and measurement of clinical utility, in that collaborative and nonstigmatizing procedures likely promote client acceptability. To capture both aspects, we offer two preliminary questionnaires (i.e., item sets open to further empirical testing) based on the data derived from the Delphi procedure. Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.