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

Published in 2011:

Thake, A., Bennet, D., Kellett, S. and Ryle, T. (2011). Cognitive Analytic Therapy for Borderline Personality Disorder: Therapist Competence and Therapeutic Effectiveness in Routine Practice. Clinical Psychology and Psychotherapy, 20, pp 216-225.

ACAT Calendar for October
77th October 2016
CPD Event: ACAT: Personal Reformulation
1010th October 2016
CPD Event: 5 day module on CAT - offered by Sussex Partnership Trust & Salomons Centre for Applied Psychology
1212th October 2016
CAT Introductory Event: Two Day Introduction to CAT - offered by South London & Maudsley NHS Foundation Trust
1414th October 2016
Exam Board, London
Training Committee, London
Trustees, London
1515th October 2016
CPD Event: Being with the ZPD - offered by CAT South
2121st October 2016
CPD Event: ACAT: Setting Up in Private Practice
2424th October 2016
CPD Event: Using CAT Concepts to Resolve Conflict - Bespoke
3131st October 2016
ACAT Membership Renewals

More information:

Current Research CAT and Psychosis Team based Interventions with 5 session CAT consultancy CAT and Learning Disability Case Series RCT of CAT with adolescent and borderline patients Integrating Embodied Awareness into CAT Comparison of Treatment of Anorexia in Adults with CAT Case Series Research - in intellectual disability (community and forensic) services An analysis of what is helpful during CAT for depression in IAPT A new psychoeducational version of CAT for anxiety delivered by PWPs in IAPT Research Awaiting Publication CAT and Psychosis Deconstruction of CAT Development and evaluation of cognitive analytic guided self-help (CAT-SH) for use in IAPT services How change is enabled during cognitive analytic therapy: An exploratory study of the treatment of depression Psychological Assessment The case formulation task in psychotherapy Therapists’ Construction and Application of the Reformulation Diagram in Clinical Practice Understanding SDRs in CAT CAT Sequential Diagrammatic Reformulation (SDR) to explore service users' experience of CAT formulation: a qualitative thesis project Bipolar Trial: CATBiD: A phase one randomised controlled study of Cognitive Analytic Therapy for Bipolar Affective Disorder A trial of 8-session CAT for depression in IAPT services A qualitative study of how therapists support exits in IAPT services Recently Published Research into Cognitive Analytic Therapy (CAT) A Feasibility Trial of Group Cognitive Analytic Music Therapy in Secure Hospital Settings (2014) Assessment of identity disturbance: Factor Structure and validation of the Personality Structure Questionnaire (PSQ) in an Italian sample Cognitive Analytic Therapy for high-risk sexual behaviour Is Cognitive Analytic Therapy (CAT) effective in treating Hoarding Disorder? Testing the Effectiveness of Cognitive Analytic Therapy for Hypersexuality Disorder: An Intensive Time-Series Evaluation Cognitive analytic therapy: A review of the outcome evidence base for treatment Group Cognitive Analytic Therapy for Female Survivors of Childhood Sexual Abuse An eight-eyed version of Hawkins and Shohet’s clinical supervision model: the addition of the cognitive analytic therapy concept of the ‘observing eye/I’ as the ‘observing us’ Outcomes of cognitive analytic therapy delivered by trainees Treatment of Paranoid Personality Disorder with Cognitive Analytic Therapy - A Mixed Methods Single Case Experimental Design Team Consultancy Using Cognitive Analytic Therapy: A Controlled Study In Assertive Outreach Using a cognitive analytic approach to formulate a complex sexual and violent offender to inform multi-agency working: developing a shared understanding Cognitive analytic therapy at 30 CAT Research Archives Do people with learning disabilities have a concept of reciprocal roles Exploring endings from therapist's experience RCT for CAT and diabetes A process study evaluating rupture repair in CAT CAT in groups The SPeDi Trial (Sheffield Personality Disorders) Goodbye Letters in CAT The effectiveness of CAT for BPD RCT for CAT informed care planning CAT and CBT for affective disorders Key References to Research in CAT Support for CAT research Research and Communication Committee

Contact Details

ACAT Administration Manager:Susan Van Baars

Administrators:Maria Cross
Alison Marfell

Postal Address:ACAT
PO Box 6793
United Kingdom

Phone:+44(0) 1305 263 511

Office Hours:Monday to Thursday
9am to 5pm

News from ACAT

29th September 2016 - Dr Tony Ryle It is with great sadness we let ACAT members know that Dr Tony Ryle died peacefully on Thursday, 29th September, 2016 surrounded by family members. He was 89. This news will be deeply felt by the CAT community both in the UK and overseas. ACAT sends ...

ACAT Elects Trustees at its 2016 AGM Click here to catch up on the election of ACAT Trustees at the AGM held on June, 2016............

CAT and Intellectual Disabilities - included in new report from BPS and RCPsych The Royal College of Psychiatrists and the Division of Clinical Psychology of the British Psychological Society have just published a report “Psychological Therapies and People with Intellectual Disabilities”....

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