ORIGINAL PAPER Functioning Assessment Short Test (FAST): validity and reliability in adults with attention-deficit/hyperactivity disorder Sofı ´a Rotger • Vanesa Richarte • Mariana Nogueira • Montse Corrales • Rosa Bosch • Raquel Vidal • Lidia Marfil • Sergi Valero • Eduard Vieta • Jose ´ Manuel Goikolea • Imma Torres • Adriane Rosa • Marı ´a Mur • Miguel Casas • Josep Antoni Ramos-Quiroga Received: 25 November 2013 / Accepted: 26 March 2014 Ó Springer-Verlag Berlin Heidelberg 2014 Abstract Studies highlight that the functional deficits in different areas of a subject’s life are an important charac- teristic that define adult attention-deficit/hyperactivity dis- order (ADHD). On the other hand, in the scientific literature, there are no evaluation instruments with psy- chometric studies concerning their reliability and validity for this variable in adults with ADHD. The aim of the present study is to evaluate the psychometric properties of the Functioning Assessment Short Test (FAST), regarding its reliability and validity, as a measure of adult ADHD functioning. A case–control study was carried out in a sample of 152 adult subjects (88 with ADHD diagnosis and 64 healthy controls). The psychometric properties of the instrument were analyzed regarding feasibility, internal consistency, concurrent validity, discriminant validity (ADHD vs. controls) and factor analysis. For the total scale, Cronbach’s alpha was of 0.83, and strong values in the measures of its discriminant capacity were obtained, AUC ROC = 0.98, IC (0.96–0.99). The test is reliable as the internal consistency was high. Significant differences are observed in the correlation between domains, between S. Rotger IRBLleida (Biomedicine Research Institute), University of Lleida, Avda. Alcalde Rovira Roure no 80, 25198 Lleida, Spain e-mail: srotger@irblleida.cat V. Richarte Á M. Nogueira Á M. Corrales Á R. Bosch Á R. Vidal Á S. Valero Á M. Casas Á J. A. Ramos-Quiroga (&) Adult ADHD Program, Department of Psychiatry, Hospital Universitari Vall d’Hebron, Pg. de la Vall d’Hebron, 119-129, 08035 Barcelona, Spain e-mail: jaramos@vhebron.net V. Richarte e-mail: dra.richarte@gmail.com M. Nogueira e-mail: mnogueira@vhebron.net M. Corrales e-mail: mcorrales@vhebron.net R. Bosch e-mail: rbosch@vhebron.net R. Vidal e-mail: rvidal@vhebron.net S. Valero e-mail: svalero@vhebron.net M. Casas e-mail: mcasas@vhebron.net V. Richarte Á M. Nogueira Á R. Bosch Á R. Vidal Á S. Valero Á M. Casas Á J. A. Ramos-Quiroga Biomedical Network Research Centre on Mental Health (CIBERSAM), Barcelona, Spain M. Nogueira Á R. Bosch Á R. Vidal Á L. Marfil Á M. Casas Á J. A. Ramos-Quiroga Department of Psychiatry and Legal Medicine, Universitat Auto `noma de Barcelona, Pg. de la Vall d’Hebron, 119-129, 08035 Barcelona, Spain e-mail: lmarfil@copc.es E. Vieta Barcelona Bipolar Disorders Unit, Institute of Neurosciences, Hospital Clı ´nic, University of Barcelona, Barcelona, Catalonia, Spain e-mail: evieta@clinic.ub.es E. Vieta Á J. M. Goikolea Á I. Torres Á A. Rosa Barcelona Bipolar Disorders Unit, Institute of Neurosciences, Hospital Clı ´nic, IDIBAPS, Barcelona, Catalonia, Spain e-mail: jmgoico@clinic.ub.es I. Torres e-mail: immatv@gmail.com A. Rosa e-mail: adribeir@clinic.ub.es 123 Eur Arch Psychiatry Clin Neurosci DOI 10.1007/s00406-014-0501-0