Assessing Axis I symptomatology on the SADS-C in two correctional samples: the validation of subscales and a screen for malingered presentations.
The Schedule of Affective Disorders and Schizophrenia-Change Version (SADS-C; Spitzer & Endicott, 1978b) is a brief, highly reliable structured interview with clinical applications to diverse populations. This investigation involved reanalyses of data from 2 earlier studies (Rogers, Grandjean, Tillbrook, Vitacco, & Sewell, 2001; Ustad, Rogers, & Salekin, 1998). Focusing on 2 clinical samples from a metropolitan jail, we investigated its subscales via exploratory and confirmatory factor analysis. A good model fit was found (comparative fit index =.92; robust comparative fit index =.94) for 4 subscales (Dysphoria, Psychosis, Mania, and Insomnia) with good interrater reliability (M intraclass coefficient =.95) and clinical relevance. As a preliminary screen for feigned mental disorders, 2 detection scales (Symptom Combinations and Symptom Selectivity) were moderately successful. By maximizing negative predictive power, the SADS-C detection strategies proved effective at ruling out feigning for mentally disordered offenders with a high likelihood of genuine disorders.
Rogers
Richard
R
Department of Psychology, University of North Texas, Box 311280, Denton, TX 76203-1280, USA. rogersr@unt.edu
Jackson
Rebecca L
RL
Salekin
Karen L
KL
Neumann
Craig S
CS
D000328:Adult; D006801:Humans; D007406:Interview, Psychological / Q000379:methods; D008297:Male; D019964:Mood Disorders / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D011329:Prisoners / Q000523:psychology; D011569:Psychiatric Status Rating Scales; D011594:Psychometrics; D012559:Schizophrenia / Q000145:classification / Q000175:diagnosis*; D012565:Schizophrenic Psychology; D013781:Texas