Research suggests that experiential avoidance may play an important role in generalized anxiety disorder (GAD; see Roemer, L., & Orsillo, S.M. (2002). "Expanding our conceptualization of and treatment for generalized anxiety disorder: Integrating mindfulness/acceptance-based approaches with existing cognitive-behavioral models." "Clinical Psychology: Science and Practice, 9", 54-68, for a review). Therefore, a treatment that emphasizes experiential acceptance, as well as intentional action, may lead to both reduced symptomatology and improved quality of life and functioning for individuals with this chronic disorder. In an open trial of a newly developed acceptance-based behavior therapy for GAD, 16 treated clients demonstrated significant reductions in clinician-rated severity of GAD and reports of anxiety and depressive symptoms and fear and avoidance of their internal experience, as well as significant improvements in reports of quality of life, at both posttreatment and 3-month follow-up. Directions for future treatment development and research are discussed. (Contains 1 table.)