Original ArticlesAutistic Personality Traits and Treatment Outcome for Alcohol Use DisordersHildebrand Karlén, Malin PhD∗,†,‡,§; Stålheim, Jonas PhD∗; Berglund, Kristina PhD∗; Wennberg, Peter PhD∥ Author Information ∗Department of Psychology †Centre for Ethics, Law, and Mental Health, University of Gothenburg ‡The National Board of Forensic Medicine, Department of Forensic Psychiatry §IGDORE, Institute for Globally Distributed Open Research and Education, Gothenburg ∥Department of Public Health Sciences, Stockholm University, Stockholm, Sweden. Send reprint requests to Malin Hildebrand Karlén, PhD, Department of Psychology, University of Gothenburg, Box 500, S-405 30 Gothenburg, Sweden. E-mail: [email protected]. The study was funded by Systembolagets Råd för Alkoholforskning. The Journal of Nervous and Mental Disease: September 2021 - Volume 209 - Issue 9 - p 665-673 doi: 10.1097/NMD.0000000000001357 Buy Metrics Abstract The importance of personality traits for the outcome of psychiatric treatment, including treatment for alcohol use disorder (AUD), has been widely acknowledged. Also, research on autism spectrum disorders has evolved in recent years, emphasizing that the behavioral traits within these neuropsychiatric disorders exist on a dimension both within and outside the boundaries of psychopathology. In the present study, the relationship between personality traits associated with autistic functioning and level of alcohol use among patients before and after concluded AUD treatment was investigated. The participants (n = 165, diagnosed with AUD) were part of a longitudinal project on AUD treatment. Data from personality questionnaires (Structured Clinical Interview of Personality Disorders II and Temperament and Character Inventory) were used to assess autistic personality traits (APTs) based on behavior within Wing’s triad, which were related to background and treatment outcome. The chosen APT items illustrated a personality functioning with an emphasis on social interaction and rigidity. Only certain included questions were indicative of still having a problematic drinking pattern 2.5 years after treatment entry, which adhered to phobic, obsessive-compulsive, and schizoid personality traits, as well as rigidity/stubbornness. Albeit with modest influence, the degree of APTs was associated with heavier drinking at treatment entry, and symptoms relating to social interaction and rigidity were associated with still having a problematic drinking pattern 2.5 years after treatment entry. A higher degree of such traits may result in having problems taking advice from others and establishing treatment alliance, important parts of treatment efficacy, making assessment of such traits relevant to clinicians. Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.