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In this article, we propose a novel computerized system for the adaptive testing of psychological disorders. The proposed system combines a mathematical representation of psychological disorders, known as the \u201cformal psychological assessment,\u201d with an algorithm designed for the adaptive assessment of an individual\u2019s knowledge. The assessment algorithm is extended and adapted to the new application domain. Testing the system on a real sample of 4,324 healthy individuals, screened for obsessive-compulsive disorder, we demonstrate the system\u2019s ability to support clinical testing, both by identifying the correct critical areas for each individual and by reducing the number of posed questions with respect to a standard written questionnaire.<\/jats:p>","DOI":"10.1177\/0013164416652188","type":"journal-article","created":{"date-parts":[[2016,6,16]],"date-time":"2016-06-16T01:34:34Z","timestamp":1466040874000},"page":"792-815","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":11,"title":["ATS-PD: An Adaptive Testing System for Psychological Disorders"],"prefix":"10.1177","volume":"77","author":[{"given":"Ivan","family":"Donadello","sequence":"first","affiliation":[{"name":"Fondazione Bruno Kessler, Trento, Italy"},{"name":"University of Trento, Trento, 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