Test-retest reliability and discriminant validity of the SWAP-200 in a psychoanalytic treatment sample.
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.
Department of Psychology, Texas Tech University, Lubbock, TX 79409-2051, USA. r.cogan@ttu.edu
Rosemary
R
Cogan
John H
JH
Porcerelli
D000328:Adult; D003866:Depressive Disorder / Q000523:psychology; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D010554:Personality Disorders / Q000175:diagnosis* / Q000523:psychology / Q000628:therapy; D011572:Psychoanalysis; D011594:Psychometrics / Q000379:methods / Q000592:standards*; D011779:Q-Sort / Q000592:standards*; D015203:Reproducibility of Results; D013997:Time Factors; D016896:Treatment Outcome