Background: Case conceptualization is assumed to be an important element in cognitive-behavioural therapy (CBT) because it describes and explains clients’ presentations in ways that inform intervention. However, we do not have a good measure of competence in CBT case conceptualization that can be used to guide training and elucidate mechanisms. Aims: The current study addresses this gap by describing the development and preliminary psychometric properties of the Collaborative Case Conceptualization – Rating Scale (CCC-RS; Padesky et al., 2011). The CCC-RS was developed in accordance with the model posited by Kuyken et al. (2009). Method: Data for this study (N = 40) were derived from a larger trial (Wiles et al., 2013) with adults suffering from resistant depression. Internal consistency and inter-rater reliability were calculated. Further, and as a partial test of the scale's validity, Pearson's correlation coefficients were obtained for scores on the CCC-RS and key scales from the Cognitive Therapy Scale – Revised (CTS-R; Blackburn et al., 2001). Results: The CCC-RS showed excellent internal consistency (α = .94), split-half (.82) and inter-rater reliabilities (ICC =.84). Total scores on the CCC-RS were significantly correlated with scores on the CTS-R (r = .54, p < .01). Moreover, the Collaboration subscale of the CCC-RS was significantly correlated (r = .44) with its counterpart of the CTS-R in a theoretically predictable manner. Conclusions: These preliminary results indicate that the CCC-RS is a reliable measure with adequate face, content and convergent validity. Further research is needed to replicate and extend the current findings to other facets of validity.

Background: CBT case conceptualization is considered to be a key competency. Prior to the publication in 2009 of Kuyken, Padesky and Dudley's book, little has been documented concerning methods for training conceptualization skills and the conceptualization process is usually perceived as predominantly an intellectual process. In this paper, the Declarative-Procedural-Reflective model of therapist skill acquisition provides a route to understanding how different kinds of knowledge systems can be integrated to enhance therapist skill acquisition. Method: Sixteen recent graduates of a postgraduate diploma in cognitive behaviour therapy worked independently through a self-practice/self-reflection workbook designed to lead them through a series of CBT interventions commonly used to elicit the information required for a CBT conceptualization. Results: The participants’ self-reflections were thematically analyzed and uncovered the following inter-related themes: increased theoretical understanding of the CBT model, self-awareness, empathy, conceptualization of the therapeutic relationship, and adaptation of clinical interventions and practice. Conclusions: A tentative conclusion reached, based on the self-reflections of the participants, was that targeted self-practice/self-reflection enhanced case conceptualization skill by consolidating the Declarative, Procedural and Reflective systems important in therapist skill acquisition.

Background: A key process in Cognitive Therapy (CT) is the development and sharing of a formulation. How clinicians develop formulations is under-researched, particularly in working with people with psychosis. Aims: This study investigated agreement between clinicians, when conceptualizing an individual's psychotic beliefs. It also explored whether agreement was dependent on qualifications and experience. Method: Eighty-two clinicians watched a video of an individual with delusional beliefs, and were asked to provide formulations using a CT template. These were compared with a “benchmark” formulation provided by three experts. Results: There was good agreement for overt behaviours, emotions, and some aspects of early experience. However, identification of theory driven components such as core beliefs or assumptions was poorer. Greater clinical experience improved the agreement with the benchmark formulation overall, and greater CT specific experience improved formulation of the theory driven items. The more experience a clinician had of working with people with psychosis the lower the rate of agreement with the expert formulation. Conclusions: Formulation of delusional beliefs from a cognitive perspective is dependant on overall experience in cognitive therapy and not knowledge of psychosis, which may hinder performance. The implications for training in CT and psycho-social interventions are considered.

Case conceptualization is a foundation of cognitive-behavioural therapy (CBT) because it describes and explains clients' presentations in ways that inform interventions. Yet the evidence base challenges the claimed benefits of case conceptualization. This paper reviews the rationale and evidence base for case conceptualization and outlines a new approach that uses the metaphor of a case conceptualization crucible in which a client's particular history, experience and strengths are synthesized with theory and research to produce an original and unique account of clients' presenting issues. The crucible metaphor illustrates three key defining principles of case conceptualization. First, heat drives chemical reactions in a crucible. In our model, collaborative empiricism between therapist and client provides the heat. Second, like the chemical reaction in a crucible, conceptualization develops over time. Typically, it begins at more descriptive levels, later a conceptualization incorporates explanatory elements and, if necessary, it develops further to include a longitudinal explanation of how pre-disposing and protective factors influence client issues. Finally, new substances formed in a crucible are dependent on the chemical characteristics of the materials put into it. Rather than simply look at client problems, our model incorporates client strengths at every stage of the conceptualization process to more effectively alleviate client distress and promote resilience.