The Relationship between Plan Compatibility of Therapist Interventions and Patient Progress: A Comparison of Two Plan Formulations

This study tested the reliability of the Plan Compatibility of Intervention Scale (PCIS) and its ability to predict patient progress within two different psychodynamic Plans or formulations: Cognitive-dynamic and object relations. High PCIS interrater reliabilities were achieved based on both theory-based Plans, suggesting that the Plan and the PCIS can be used within different psychodynamic theoretical orientations. The study also compared the relationship between therapist interventions which were compatible with either the cognitive-dynamic or object relations based Plans, and patient progress. Therapist interventions that were compatible with the object relations Plan predicted in-session patient progress in the middle phase of therapy for the two patients studied, and in the early phase for one of them.