Offenders With Personality Disorder Who Fail to Progress: A Case-Control Study Using Partial Least Squares Structural...

Area of Science:

• Forensic Psychology
• Clinical Psychology
• Criminology

Background:

• Engaging and retaining offenders with personality disorder in treatment presents significant challenges.
• The UK Offender Personality Disorder (OPD) pathway aims to identify and engage these individuals.
• A subset of offenders on the OPD pathway are not accepted into services, hindering their progress.

Purpose of the Study:

• To identify and describe offenders on the OPD pathway who fail to progress.
• To understand the underlying reasons for non-progression within the pathway.

Main Methods:

• A comparative study involving 50 offenders refused from at least two OPD services (nonprogression group) and 100 offenders accepted into services (control group).
• Partial least squares structural equation modeling was employed to analyze causal factors influencing service non-acceptance.

Main Results:

• Attitude toward treatment was the most significant factor in nonprogression (β=.41; P<.001; f²=0.25).
• Psychopathology, including psychopathy, psychosis, and co-occurring personality disorders, also strongly influenced nonprogression (β=.41; P<.001; f²=0.25).

Conclusions:

• Findings offer a foundation for future interventions to enhance the acceptance of offenders with personality disorder into OPD services.
• Targeting negative treatment attitudes and managing psychopathology are crucial for improving pathway progression.