Running head: PSYCHOMETRIC PROPERTIES OF SOCIAL ANXIETY MEASURES IN ASD Measuring Social Anxiety in Adults with Autism Spectrum Disorder: Psychometric Properties of Self-Report Instruments Authors: Kelsie A. Boulton1,2, & Adam J. Guastella1,2 1. Autism Clinic for Translational Research, Brain and Mind Centre, Children’s Hospital Westmead Clinical School, Faculty of Medicine and Health, University of Sydney, Camperdown, New South Wales, 2050, Australia. 2. Child Neurodevelopment and Mental Health Team, Brain and Mind Centre, Children’s Hospital Westmead Clinical School, Faculty of Medicine and Health, University of Sydney, Camperdown, New South Wales, 2050, Australia. Please address correspondence to: Prof Adam Guastella Brain & Mind Centre The University of Sydney 100 Mallett Street Camperdown, NSW 2050 Australia
[email protected] PSYCHOMETRIC PROPERTIES OF SOCIAL ANXIETY MEASURES IN ASD 2 Abstract Adults with autism spectrum disorder (ASD) are at elevated risk for social anxiety disorder (SAD). Limited information exists on the appropriateness of using social anxiety instruments with these adults. This study examines psychometric properties of self-report social anxiety instruments in autistic adults without intellectual disability, compared to adults with SAD. Additionally, we compared instrument scores between autistic adults with a dual diagnosis of SAD and adults with SAD only. Adults diagnosed with SAD (N=316) or ASD (N=102) were recruited from the Brain and Mind Centre in New South Wales, Australia. Sixty autistic participants received a diagnosis of SAD. Participants completed the Liebowitz Social Anxiety Scale-self-report, the Social Interaction Anxiety Scale, the Social Phobia Scale, and the Brief Fear of Negative Evaluation Scale. All instruments showed excellent internal consistency in autistic adults.