title: Criterion-related diagnostic validity and test-retest reliability of the MMPI-168(L) in mentally retarded adolescents and adults.
abstract: Sixty-three persons residing in an institution and diagnosed with mild or moderate mental retardation were assessed with a modification of the MMPI-168. Fifty-one of the residents also had psychiatric disturbances. The residents were divided into three categories on the bases of pre-existing DSM III-R diagnoses. The categories were "psychotic," "executive control dysfunction," and "other-control." Significant differences were observed between the psychotic group and the other-control group on scales F, K, 6, and 8. Reevaluations were conducted four to 22 months later (MDN = 12 months). Significant test-retest reliability was found with scales L, F, K, 1, 4, 5, 6, 7, 8, and 9. The MMPI-168(L) can serve as an objective instrument in the assessment of thought disturbance and personality in mentally retarded persons.
authors.affiliation: Developmental Disabilities Division, Central State Hospital, Georgia, USA. bmcdanie@mail.gac.peachnet.edu
authors.forename: W F
authors.initials: WF
authors.lastname: McDaniel
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015897:Comorbidity; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology*; D008950:MMPI / Q000706:statistics & numerical data*; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000453:epidemiology / Q000523:psychology; D008875:Middle Aged; D019965:Neurocognitive Disorders / Q000175:diagnosis; D011594:Psychometrics; D011618:Psychotic Disorders / Q000175:diagnosis / Q000523:psychology; D015203:Reproducibility of Results; D012559:Schizophrenia / Q000175:diagnosis