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The ADP-IV questionnaire: differential validity and concordance with the semi-structured interview
Chris K W Schotte1, Dirk A M De Doncker, Dorota Dmitruk
1UZA, University Hospital Antwerp, Department of Psychiatry, and CAPRI, Collaborative Antwerp Psychiatric Research Institute, University of Antwerp, Belgium. chris.schotte@uza.be
Journal of Personality Disorders
|September 3, 2004
Summary
The Assessment of DSM-IV Personality Disorders questionnaire (ADP-IV) effectively differentiates general and psychiatric populations and patients with personality disorders (PDs). It shows good agreement with the SCID-II, validating its use for PD assessment.
Area of Science:
- Psychiatry
- Psychological Assessment
- Clinical Psychology
Background:
- Personality disorders (PDs) are complex mental health conditions.
- Accurate assessment tools are crucial for diagnosis and treatment.
- The Assessment of DSM-IV Personality Disorders questionnaire (ADP-IV) is a self-report measure for DSM-IV Axis II PDs.
Purpose of the Study:
- To investigate the construct validity of the ADP-IV.
- To assess its differential validity between general and clinical populations.
- To evaluate its convergent validity with the SCID-II semi-structured interview.
Main Methods:
- The study compared a general Flemish population sample (n=659) with psychiatric inpatients (n=487).
- Convergent validity was assessed in psychiatric inpatients (n=59) using the SCID-II.
- Differential and convergent validity of the ADP-IV were analyzed.
Main Results:
- The ADP-IV demonstrated good differential validity, distinguishing between general and psychiatric samples, and between PD and non-PD patients.
- Dimensional scales and categorical measures effectively discriminated between groups.
- Convergent validity with the SCID-II showed a correlation of .67 for dimensional scores and kappa coefficients around .50 for categorical diagnoses.
Conclusions:
- The ADP-IV is an efficient self-report tool for assessing personality disorders.
- It provides reliable dimensional and categorical measures of PDs.
- The findings support the ADP-IV's utility in clinical and research settings.