This practical guide offers mental health professionals a detailed, step-by-step description on how to conduct Parent-Child Interaction Therapy (PCIT) - the empirically validated training program for parents with children who have disruptive behavior problems. Drawn from their own experience in treating hundreds of families, the authors include several illustrative examples and vignettes as well as an appendix with several assessment instruments to help parents to conduct PCIT. An exclusive feature of this volume is a thorough discussion on how to teach parents to do behavioral play therapy and to effectively implement timeout procedures with highly aggressive preschoolers.