Child-Parent Relationship Therapy (CPRT) is grounded in child-centered/person-centered theory and consistent with the principles of child development and attachment theory. Further refinement of the 10-session structure led to formally naming the model CPRT to distinguish it from other filial therapy models. The child-centered approach to play therapy, like client-centered therapy with adults, is based upon a process of being with children as opposed to a procedure of application. In 1964, Bernard Guerney published the first article, “Filial Therapy: Description and Rationale,” explaining the principles and results of filial therapy. Beginning with S. Bratton and G. Landreth’s investigation of the effects of CPRT with single parents reporting child behavior problems, the CPRT filial therapy model has been researched in 32 outcome studies representing a wide range of child and parent populations. The overall aim of CPRT is to enhance and strengthen the parent-child relationship through improved family interactions and problem-solving strategies and through increased feelings of familial affection, warmth, and trust.