Scripting the DSM-5 Alternative Model for Personality Disorders assessment procedure: A clinically feasible multi-informant multi-method approach

Published case studies on the DSM-5 (section III) Alternative Model for Personality Disorders (AMPD) generally utilized unstandardized assessment procedures or mono-method approaches. We present a case from clinical practice to illustrate a standardized, clinically feasible procedure for assessing personality pathology according to the full AMPD model, using a multi-method approach. We aim to present a procedure that can guide and inspire clinicians that are going to work with dimensional models as presented in DSM-5 and ICD-11. Specifically, we show how questionnaire and interview data from multiple sources (i.e. patient and family) can be combined. The clinical case also illustrates how Criterion A (i.e. functioning) and B (i.e. traits) are interrelated, suggesting that the joint assessment of both Criterion A and B is necessary for a comprehensive and clinically relevant case formulation. It also highlights how multi-method information can enhance diagnostic formulations. Finally, we show how the AMPD model can serve treatment planning and provide suggestions for how patient feedback might be delivered. (c) 2020 John Wiley & Sons, Ltd.