Measuring vulnerability to anxiety: factorial structure, reliability, validity, and discriminatory accuracy of the anxiety sensitivity index-3-PT

We evaluated the Portuguese version of the Anxiety Sensitivity Index 3 (ASI-3-PT). Results of a confirmatory factor analysis (N = 603; 65.3% women, M age = 28.55, SD = 10.42) confirmed multidimensionality of the construct and the receiver operating characteristic confirmed the discriminant capacity of the measure between clinical and nonclinical samples.
This work was supported by a Foundation for Science and Technology, Portugal and Programa COMPETE Doctoral Grant SFRH/BD/80945/2011 to Ana Ganho-Avila, and a Post-Doctoral Grant SFRH/BPD/87514/2012 to Mariana Moura-Ramos. This study was partially conducted at Psychology Research Centre (UID/PSI/01662/2013), University of Minho, and supported by the Portuguese Foundation for Science and Technology and the Portuguese Ministry of Education and Science through national funds and co-financed by FEDER through COMPETE2020 under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007653).