He has been active for more than 15 years in the Program in Child Affective and Anxiety Disorders at Duke, where his research interests have focused broadly on child and adolescent psychotherapy treatment development and evaluation; anxiety and depressive disorders in children and adolescents; chronic tic disorders; behavioral and interpersonal approaches to the treatment of adolescent depressive disorders; translating efficacious treatments into community settings; and multi-site pediatric and adolescent comparative treatment trials. He has received multiple grants from NIMH among others, awards for his research and writing, and is currently associate editor for the Journal of Consulting and Clinical Psychology and Journal of Child and Adolescent Psychopharmacology.