The Terrain
Although much has been written about the basic incompatibility of the dominant quantitative research model in psychotherapy and the qualitative preferences of the practitioner community, the recent developments detailed in this chapter have resulted in a growing rapprochement on both sides in the service of pragmatically improving the effectiveness of psychotherapy. Examples of these developments include (a) the growing mixed-methods movement; (b) the creation of the American Psychological Association’s evidence-based practice in psychology and evidence-based relationships models, to complement traditional empirically supported treatments; (c) the growth of the “practice-based evidence” model to complement evidence-based practice; (d) the organization of the case study field into a coherent whole with a variety of types of complementary approaches; (e) the emergence of “theory-building” case studies; (f) the development of case-study-based thinking within the cognitive-behavioral therapy movement; and (g) government support of initiatives that link traditional randomized controlled trial research to approaches that emphasize both qualitative and quantitative methods.