Classification accuracy of the test of memory malingering in traumatic brain injury: results of a known-groups analysis.
This study used a known-groups design to determine the classification accuracy of the Test of Memory Malingering (Tombaugh, 1996, 1997) in detecting cognitive malingering in traumatic brain injury (TBI). Forty-one of 161 TBI patients met Slick, Sherman, and Iverson (1999) criteria for Malingered Neurocognitive Dysfunction. Twenty-two no-incentive memory disorder patients were also included. The original cutoffs (<45) for Trial 2 and Retention demonstrated excellent specificity (less than a 5% false positive error rate) and impressive sensitivity (greater than 45%). However, these cutoffs are actually conservative in the context of mild TBI. Over 90% of the non-MND mild TBI sample scored 48 or higher on the Retention Trial and none scored less than 46 while 60% of the MND patients claiming mild TBI were detected at those levels. Trial 1 also demonstrated excellent classification accuracy. Application of these data to clinical practice is discussed.
Greve
Kevin W
KW
Department of Psychology, University of New Orleans-Lakefront, LA 70148,USA. kgreve@uno.edu
Bianchini
Kevin J
KJ
Doane
Bridget M
BM
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D001930:Brain Injuries / Q000150:complications*; D004185:Disability Evaluation; D005260:Female; D005555:Forensic Psychiatry / Q000379:methods*; D006801:Humans; D008297:Male; D008306:Malingering / Q000145:classification* / Q000175:diagnosis* / Q000209:etiology; D008569:Memory Disorders / Q000175:diagnosis* / Q000209:etiology; D008875:Middle Aged; D009483:Neuropsychological Tests; D011237:Predictive Value of Tests; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014888:Wechsler Scales