In this presentation, Katerina Ntourou, Ph.D., CCC-SLP, discusses the role of temperament of the client, the parents, and the clinician in stuttering clinical practice. She reviews key research findings on the role of temperament in stuttering and the impact of the temperament and personality traits of all key team members (child who stutters, parents, clinician) on the therapeutic relationship, choice of treatment methods, management of therapy expectations, and overall treatment effectiveness.