Lindfors, O., Knekt, P., Virtala, E., Laaksonen, M. A., & Helsinki Psychotherapy Study Group. (2012). The Effectiveness of Solution-Focused Therapy and Short- and Long-Term Psychodynamic Psychotherapy on Self-Concept During a 3-Year Follow-Up. The Journal of Nervous and Mental Disease, 200
(11), 946–953. https://doi.org/10.1097/NMD.0b013e3182718c6b
From the research article’s abstract: “This study compares the effectiveness of solution-focused therapy (SFT) and short- and long-term psychodynamic psychotherapy (SPP and LPP) on self-concept during a 3-year follow-up. Altogether, 326 patients with mood or anxiety disorder were randomized to SFT, SPP, and LPP in the Helsinki Psychotherapy Study. Outcome was assessed using the Structural Analysis of Social Behavior questionnaire at baseline and 7, 12, 24, and 36 months after. Overall, during the first year of follow-up, self-concept improved more in both SFT and SPP than in LPP, indicated by the primary outcome indicators self-directed affiliation (AF) and self-directed autonomy, as well as by most of the eight secondary cluster scores.