Criterion-related diagnostic validity and test–retest reliability of the MMPI-168(L) in mentally retarded adolescents and adults

✍ Scribed by W. F. McDaniel

• Publisher: John Wiley and Sons
• Year: 1997
• Tongue: English
• Weight: 63 KB
• Volume: 53
• Category: Article
• ISSN: 0021-9762
• DOI: 10.1002/(sici)1097-4679(199708)53:5<485::aid-jclp10>3.0.co;2-a

✦ Synopsis

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 preexisting 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 ϭ 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.