Recently, studies have been conducted on the feasibility of Parent-Child Interaction Therapy (PCIT) with families that include at least one deaf family member. The results have shown success with adapted PCIT. The aim of this study is to explore the effectiveness of the Dyadic Parent-Child Interaction Coding System (DPICS) in ASL using data from families who have participated in PCIT conducted in ASL. The DPICS is a system of coding parent and child verbalizations to track parent mastery of skill and child compliance.