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In observance of the 2024 holiday season, Sage offices will be closed Monday December 23rd through Wednesday January 1st. Normal operations, including shipping for orders placed during the closure, will resume on Thursday January 2nd. For technical support during this time, please visit our technical support page for assistance options. 

We wish you a wonderful holiday season. Thank you. 

Matthew O. Howard University of North Carolina, Chapel Hill, USA, University of Michigan, Ann Arbor, USA

Matthew Howard, Ph.D. is the Frank Daniels Distinguished Professor of Social Work at the University of North Carolina. Nationally acknowledged as an expert in psychiatric comorbidity of substance use disorders and evidence-based practice, he has published more than 100 articles in these areas and has served as PI or co-PI on several federally-funded grants. His recent research has examined predictors of major depression and anxiety disorders in adolescent inhalant and ecstasy users, racial and gender differences in the prevalence and predictors of substance-induced psychiatric disorders, self-medication of psychiatric disorders with alcohol and illicit drugs, and long-term health outcomes of polydrug dependent adults with comorbid mental health disorders.