One in five children and adolescents will experience a mental health disorder in any given year, and many more struggle with serious mental health challenges.

John Weisz’s research involves development and testing of interventions for these disorders and challenges, as well as meta-analyses to characterize and improve the science of youth mental health care.

His most recent work involves building and testing, in randomized controlled trials, transdiagnostic approaches to youth psychotherapy that use modular design and empirically supported principles of change. His work integrates evidence-based practices with strategies for personalizing treatment to fit individual youth and family characteristics. His research also includes development and testing of brief digital interventions designed to maximize access by young people, and interventions delivered by lay-providers to adolescents in Africa.