@article {2600, title = {ATS-PD: An Adaptive Testing System for Psychological Disorders}, journal = {Educational and Psychological Measurement}, volume = {77}, number = {5}, year = {2017}, pages = {792-815}, abstract = {The clinical assessment of mental disorders can be a time-consuming and error-prone procedure, consisting of a sequence of diagnostic hypothesis formulation and testing aimed at restricting the set of plausible diagnoses for the patient. 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 {\textquotedblleft}formal psychological assessment,{\textquotedblright} with an algorithm designed for the adaptive assessment of an individual{\textquoteright}s 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{\textquoteright}s 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.}, doi = {10.1177/0013164416652188}, url = {https://doi.org/10.1177/0013164416652188}, author = {Ivan Donadello and Andrea Spoto and Francesco Sambo and Silvana Badaloni and Umberto Granziol and Giulio Vidotto} }