He is the author or co author of numerous publications and is an associate editor of Research in Autism Spectrum Disorders and Research in Developmental Disabilities and serves on the editorial boards of the Journal of Anxiety Disorders, Behavior Therapy, the Journal of Psychopathology and Behavioral Assessment, and Clinical Child and Family Psychology Review. His research and clinical interests focus on anxiety disorders (particularly anxiety in children and specific phobias in children and adults) and the intersection of autism and anxiety.