Children and adolescents with moderate and severe disabilities often have communication challenges that lead them to use problem behavior to convey their desires. This is the most comprehensive contemporary volume on functional communication training (FCT)--the individualized instructional approach that teaches a child socially acceptable communicative alternatives to aggression, tantrums, self-injury, and other unconventional behaviors. The expert authors provide accessible, empirically based guidelines for implementing FCT, and tips for overcoming obstacles. Grounded in the principles of applied behavior analysis, the book includes detailed strategies for developing a support plan, together with illustrative case examples.