Cognitive-Behavioral Play Therapy was developed by Susan M. Knell and, today, is an intervention that adapts empirically supported CBT techniques into a play environment with young children. Cognitive-Behavioral Play Therapy emphasizes the direct involvement of the child, with various problems, in the therapeutic process. All Cognitive Behavioral Play Therapy works involve regular meetings with parents in order to collect information on the child's progress, to monitor and intervene in parent-child interaction, giving fundamental indications for achieving therapeutic objectives.