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Inpatient cognitive analytic therapy for emotionally unstable personality disorder: A co‐produced and mixed methods single case experimental design.

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Bibliographic Details
Title: Inpatient cognitive analytic therapy for emotionally unstable personality disorder: A co‐produced and mixed methods single case experimental design.
Authors: France, Helena (AUTHOR), Rychlinski, Isobella (AUTHOR), Gaskell, Chris (AUTHOR), Simmonds‐Buckley, Melanie (AUTHOR), Kellett, Stephen (AUTHOR)
Source: Psychology & Psychotherapy: Theory, Research & Practice. Jun2026, Vol. 99 Issue 2, p543-561. 19p.
Subjects: Alcoholism treatment, Personality disorder treatment, Anxiety prevention, Hospital care, Interviewing, Vitamin B1, Brief psychotherapy, Treatment effectiveness, Time series analysis, Personality disorders, Affective disorders, Experimental design, Suicidal behavior, Mental health counseling, Research methodology, Cognitive therapy, Case studies, Psychiatric hospitals, Psychological tests, Home rehabilitation, Promethazine, Medical referrals
Geographic Terms: United Kingdom
Abstract: Objectives: To coproduce an evaluation of the effectiveness cognitive analytic therapy (CAT) for emotionally unstable personality disorder (EUPD) conducted during a psychiatric inpatient admission. Design: A four‐phase mixed methods single‐case experimental design (i.e. A‐B‐C‐FU design). The first three phases (A‐B‐C) were conducted on an inpatient ward and the follow‐up phase (1 month) coincided with discharge. Methods: The intervention was a protocol‐driven eight‐session CAT. Intervention competency was assessed using the CCAT measure. Recognition and revision of three target problems (TPs) and associated target problem procedures (TPPs) were rated at each session. Five idiographic measures (i.e., anxiety, connecting to others, manic mood, obsessional intensity and people‐pleasing) were rated daily across all phases. Nomothetic outcomes (i.e., PHQ‐9 and GAD‐7) were completed at assessment, termination and follow‐up. A change interview with the patient participant was conducted at discharge and follow‐up. The patient participant provides a commentary on the process and outcome of the therapy. Results: CAT was delivered competently. Change in TP and TPPs synchronized with CAT phases. Most change in idiographic outcomes occurred during the follow‐up, with discharge being associated with deterioration. There was a reliable improvement to PHQ‐9 and GAD‐7 scores. Changes were rated by the patient as being personally important, impactful and unlikely without CAT. The patient participant's account of the therapy noted the importance of the inpatient psychological help, the tools of CAT being useful and the ending being painful. Conclusions: Brief CAT can be competently delivered on inpatient wards and appeared an acceptable and effective intervention for this EUPD admission. Research directions are provided. [ABSTRACT FROM AUTHOR]
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Database: Psychology and Behavioral Sciences Collection
Description
Abstract:Objectives: To coproduce an evaluation of the effectiveness cognitive analytic therapy (CAT) for emotionally unstable personality disorder (EUPD) conducted during a psychiatric inpatient admission. Design: A four‐phase mixed methods single‐case experimental design (i.e. A‐B‐C‐FU design). The first three phases (A‐B‐C) were conducted on an inpatient ward and the follow‐up phase (1 month) coincided with discharge. Methods: The intervention was a protocol‐driven eight‐session CAT. Intervention competency was assessed using the CCAT measure. Recognition and revision of three target problems (TPs) and associated target problem procedures (TPPs) were rated at each session. Five idiographic measures (i.e., anxiety, connecting to others, manic mood, obsessional intensity and people‐pleasing) were rated daily across all phases. Nomothetic outcomes (i.e., PHQ‐9 and GAD‐7) were completed at assessment, termination and follow‐up. A change interview with the patient participant was conducted at discharge and follow‐up. The patient participant provides a commentary on the process and outcome of the therapy. Results: CAT was delivered competently. Change in TP and TPPs synchronized with CAT phases. Most change in idiographic outcomes occurred during the follow‐up, with discharge being associated with deterioration. There was a reliable improvement to PHQ‐9 and GAD‐7 scores. Changes were rated by the patient as being personally important, impactful and unlikely without CAT. The patient participant's account of the therapy noted the importance of the inpatient psychological help, the tools of CAT being useful and the ending being painful. Conclusions: Brief CAT can be competently delivered on inpatient wards and appeared an acceptable and effective intervention for this EUPD admission. Research directions are provided. [ABSTRACT FROM AUTHOR]
ISSN:14760835
DOI:10.1111/papt.70038