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Test–retest reliability and discriminant validity of the SWAP‐200 in a psychoanalytic treatment sample
Author(s) -
Cogan Rosemary,
Porcerelli John H.
Publication year - 2012
Publication title -
psychology and psychotherapy: theory, research and practice
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.102
H-Index - 62
eISSN - 2044-8341
pISSN - 1476-0835
DOI - 10.1111/j.2044-8341.2011.02020.x
Subject(s) - psychology , clinical psychology , discriminant validity , personality , personality disorders , psychometrics , personality assessment inventory , test validity , confirmatory factor analysis , psychiatry , statistics , social psychology , structural equation modeling , mathematics , internal consistency
To assess the test–retest reliability of the Shedler–Westen Assessment Procedure‐200 (SWAP‐200) personality disorder, high functioning, and Q‐factor (trait/symptom) scales, we correlated the reports of 47 psychoanalysts describing a patient at the beginning of analysis and at 6 months of analysis. Since the length of psychoanalysis averages almost 6 years, and since personality disorders change slowly, we hypothesized that the test–retest reliabilities of the personality disorder scale scores would be higher than those of the Q‐factor scales, which should change more quickly. The average personality disorder scale test–retest reliability was r = .82 and the average Q‐factor scale test–retest reliability was r = .64. The values for mismatched cases were .02 and −.05, respectively. Analysts also provided a clinical Diagnostic and Statistical Manual (DSM‐IV) diagnosis for each of 77 patients. The SWAP‐200 scores for patients with an Axis I diagnosis of depression and for four of the five Axis II diagnoses with four or more cases provide support for the validity of the SWAP‐200.