Selective mutism is a childhood anxiety disorder that is characterized by a persistent failure to speak in certain social situations, despite an ability to do so in others. One barrier to treatment is that even those professionals with a solid foundation in the assessment and treatment of anxiety disorders in children, lack the knowledge and skills necessary to treat children with selective mutism. Attendees learn about best practices related to the assessment and treatment of selective mutism; discuss the role environment plays; and gain specific techniques for effective behavioral interventions to reverse the cycle of negative reinforcement, including shaping, stimulus fading, fade ins, and targeted practice.