The Systemic Therapy Inventory of Change (STIC) Initial Scales: Are they sensitive to change?

The Systemic Therapy Inventory of Change (STIC) is a multisystemic and multidimensional feedback system that provides therapists feedback about systemic domains of client change in individual, couple, and family therapy over time. The goal of the present study is to investigate the sensitivity to change of the scores of the STIC Initial Scales. In total, 583 clients who voluntarily sought individual, couple, or family therapy services and participated in a randomized controlled trial study were included in the study. Their pre- and posttherapy responses to the STIC Initial measures and corresponding validation measures for individual functioning, couple relationship, child adjustment, and family functioning were compared. The results support the sensitivity to change of the scores of the four STIC Initial Scales investigated: Individual Problems and Strengths (IPS), Relationship with Partner (RWP), Family/Household (FH), and Child Problems and Strengths (CPS). Of particular note, the IPS demonstrated even greater change over time than the BDI-II, BAI, and OQ-45. The discriminant validity of measuring change with the CPS was not supported. Thus, the STIC Initial IPS, RWP, and FH can be usefully employed to measure multisystemic changes in both research and clinical work. Public Significance Statement The present study provides evidence that three of The Systemic Therapy Inventory of Change (STIC) Initial Scales can accurately detect improvement or degradation in psychotherapy that is happening, a statistical quality called sensitivity to change. When the STIC Initial Scales are used to track clients' progress throughout therapy or assess clinical outcomes, users can be confident that the change reflected is reliable and has validity.