The Effectiveness of CAT for Borderline Personality Disorder: the Shape of Change in Routine Practice

This project is looking at how CAT is delivered under routine conditions in the NHS. It has collected a sample of therapists together and examines BPD clients' responsivity to CAT treatment and the degree to which CAT is actually being competently delivered. The methodology is a multi-site hermeneutic single case approach which establishes 5 key evidence criteria on which a case can be considered successful. The results will entail summating conclusions from each case. The project is run by Stephen Kellett, Dawn Bennett and Tony Ryle. We are nearing the point of project completion, as we have collected outcomes for over ten cases using the exhaustive evaluation methodology. In early 2009 we are planning to answer the following questions:-

  • What is the rate of clinically significant change for BPD clients in CAT in terms of symptoms, personality structure and dissociation?
  • Is there any evidence for sudden gains in CAT?
  • Does more competent CAT produce more better outcomes?
  • What do clients think of CAT?
  • Is the CAT BPD model good enough and what are the training implications for working with BPD?

Requests for information can be directed to Stephen Kellett on