Stability or instability in avoidant personality disorder:Mode fluctuations within schema therapy sessions.

Area of Science:

• Psychology
• Psychotherapy Research
• Clinical Psychology

Background:

• Avoidant personality disorder (APD) is a prevalent condition with limited empirical investigation.
• Understanding the dynamic nature of self-states in APD is crucial for effective treatment.

Purpose of the Study:

• To characterize the frequency, intensity, and fluctuation patterns of self-states (modes) in APD clients undergoing schema therapy (ST).
• To evaluate the utility of the client mode rating scale (CMRS) for assessing in-session client change.

Main Methods:

• Utilized the client mode rating scale (CMRS) to code 645 five-minute segments from 60 ST sessions.
• Employed two independent raters for segment coding, achieving adequate inter-rater reliability.

Main Results:

• The avoidant/detached mode appeared in 74% of segments, showing high intensity and instability.
• The vulnerable child mode (58%) and dysfunctional parent mode (40%) were also intense and unstable.
• The healthy adult mode, present in 33% of segments, was significantly more stable than other modes.

Conclusions:

• The study validates the mode concept for describing personality states and their instability in psychotherapy.
• In-session, segment-by-segment ratings effectively assess client change.
• APD clients demonstrate considerable mode instability, a factor not explicitly addressed by DSM5 criteria.