Iser DeLeon, Ph.D.

Iser DeLeon
Iser DeLeon
Director of Research Development, Department of Behavioral Psychology

Kennedy Krieger Institute
707 N. Broadway
Baltimore, MD 21205
Phone: (443) 923-2842

Dr. Iser DeLeon is the Director of Research Development for the Department of Behavioral Psychology at the Kennedy Krieger Institute and an Associate Professor of Psychiatry and Behavioral Sciences at the Johns Hopkins University School of Medicine.


Dr. DeLeon received his Ph.D. in psychology from the University of Florida in 1997 and completed a post-doctoral fellowship in behavioral psychology and pediatrics at the Kennedy Krieger Institute and Johns Hopkins Department of Pediatrics in 1998. In additional to his appointments at Kennedy Krieger and Johns Hopkins, Dr. DeLeon is an adjunct Associate Professor in Psychology at the University of Maryland, Baltimore County. He currently serves on the Board of Directors of the Behavior Analysis Certification Board and the Science Board of the Association for Behavior Analysis International. Prior commitments include Associate Editor for the Journal of Applied Behavior Analysis and President of the Maryland Association for Behavior Analysis.


Dr. DeLeon's research has focused on the variables that give rise to severe behavior problems (e.g., self-injury, aggression) in individuals with developmental disabilities and the hypothesis-driven development of interventions for behavior disorders. Separate, often related, lines of research examine determinants of choice responding in individuals with developmental disabilities and methods that permit these individuals to express meaningful preferences. Dr. DeLeon has been the principal investigator or a co-investigator for several NIH-funded grants, largely translational in nature, that explore the implications of basic behavioral processes and related theories (e.g. behavioral economics, behavioral momentum) for behavioral assessment and treatment.