Urdu Adaptation and Validation of Social Interaction Anxiety Scale: A Confirmatory Factor Analysis

The Social Interaction Anxiety Scale (SIAS) is a globally used scale for clinical diagnostic purposes for social anxiety disorder (SAD). This article investigates the psychometric properties of the SIAS, followed by its adaptation and validation in Urdu. The study consisted of two phases. The initial phase involved the translation of the scale, and the second phase was of a cross-sectional nature and consisted of evaluating factor structure and psychometric properties of the scale. For this purpose, the study enrolled a purposive sample of 573 adults aged between 18 to 45 years (mean [standard deviation (SD)] age: 23.68 [4.28] years) with a diagnosis of SAD. The sample was recruited from educational institutes, hospitals, and clinics in Lahore, Pakistan. The data was collected using a demographic form and the Urdu version of the SIAS, along with the Multidimensional Psychological Flexibility Inventory (MPFI). The analyses of the study were carried out using SPSS V27 and AMOS V24. Confirmatory factor analysis revealed a single factor structure of the Urdu version of the SIAS consisting of 16 items. The psychometric values of the scale shown were excellent, as Cronbach's alpha equaled 0.91, convergent validity r equaled 0.37 at p less than 0.01 with psychological inflexibility, and discriminant validity r equaled -0.47 at p less than 0.01 with psychological flexibility. The study concluded that the Urdu version of the SIAS was a valid and reliable measure for the assessment of social anxiety in the Pakistani population.