Dialectical Behavior Therapy Program

Brittain Mahaffey, PhD
Welcome to the Stony Brook Dialectical Behavior Therapy (DBT) Program. DBT is a therapy that focuses on finding balance and getting unstuck from extremes. 

The “D” in DBT stands for dialectical, which involves thinking and acting in ways that embrace life’s challenges and contradictions rather than being overwhelmed by them. It’s designed for people who are leading emotionally painful lives and feel like life itself is crushing them. Many people in our therapy program have tried countless other treatments without relief. 

DBT is a scientifically backed treatment that takes a wholistic approach to helping people develop a life that’s not only less painful, but really worth living. As intensively trained DBT therapists, we value connecting with each person we treat and developing personalized strategies to help them to reduce their emotional suffering, improve relationships, and find balance in their lives.  We also recognize that while you may not have caused the problems in your life, you still have to fix them. 

We’re here to help…our goal is to enable you to learn emotional life skills and make sustainable changes in your daily life. We’re so glad that you found us and hope that we can help you and your loved ones build better lives.


Brittain Mahaffey, PhD, DBT-LBC
Director, Stony Brook Dialectical Behavior Therapy (DBT) Program
Licensed Clinical Psychologist and Assistant Professor
DBT-Linehan Board Certified Clinician