The Relationships Between Categories (RBC) technique is a qualitative methodology for the metasynthesis of psychoanalytic case studies. By analyzing repetitive bilateral, trilateral, or quadrilateral relationships of transference themes, this methodology seeks to analyze case studies with existing theoretical concepts, thereby formulating a new theory. The proposed tool attempts to explore and validate hidden connections between different psychotherapy components, thus enhancing integration of various bodies of knowledge and decreasing the gap between practice and theory. This methodology is demonstrated here by research on transference case studies that connect transference to components of cognitive behavioral therapy.

Case studies (CS) are relevant for the development of theoretical and practical competencies in psychotherapy. Despite rapid progress in the development of methods and principles for establishing CS in the last three decades, research into the aims of CS, especially in training, or how CS are to be conducted is rare.

To elucidate the form and methodology of CS, the objectives of CS used in training institutions (TI), and if/how TIs handle therapist allegiance. Also, this preliminary investigation will suggest avenues for further research and attempt to establish certain guidelines.

In order to counteract researcher bias and enlarge the question-pool, a focus group was established. The recorded and transcribed text was analyzed with Mayring's method of qualitative content analysis, and the generated categories were formulated as questions. The resulting questionnaire with both qualitative and quantitative queries was sent out (after pre-testing) to all 39 Austrian TIs that provide professional psychotherapy training. The answers and text passages received were then also categorized with qualitative content analysis. Data analysis was discussed by a peer group consisting of three psychotherapists trained in differing schools of psychotherapeutic methods.

94% of Austrian institutes use CS as part of their psychotherapeutic training. Understanding of the term "case study" is inconsistent and has a wide variety of interpretations. CS serve mainly: (1) For observation of training/progress in therapeutic practice and knowledge/acquisition of the theory specific to each psychotherapeutic school; (2) To improve (self-)reflection capabilities; and (3) To expand theoretical knowledge. Most of the CS written are not accessible for students nor for the research community. More than two thirds of the CS take only the position of the author into account (the client's position is not described). 15.5 % of the TIs do not consider researcher or therapist allegiance at all.

A more precise formulation of the term case study is needed in psychotherapeutic training. The training therapists play a key function, as they exemplify and teach how to deal with distorting factors. General guidelines as to how to conduct CS in training institutions would provide more direction to students, increase scientific rigor, and enhance synergistic effects.