title: Number of impaired scores as a performance validity indicator.
abstract: This study examined embedded performance validity indicators (PVI) based on the number of impaired scores in an evaluation and the overall test battery mean (OTBM). Adult participants (N = 175) reporting traumatic brain injury were grouped using eight PVI. Participants who passed all PVI (n = 67) demonstrated fewer impaired scores and higher OTBM than those who failed two or more PVI (n = 66). Impairment was defined at three levels: T scores < 40, 35, and 30. With specificity ≥.90, sensitivity ranged from .51 to .71 for number of impaired scores and .74 for OTBM.
authors.affiliation: Division of Physical Medicine and Rehabilitation, University of Utah School of Medicine, Salt Lake City, UT 84132, USA. jeremy.davis@hsc.utah.edu
authors.forename: Jeremy J
authors.initials: JJ
authors.lastname: Davis
authors.forename: Bradley N
authors.initials: BN
authors.lastname: Axelrod
authors.forename: Tara S
authors.initials: TS
authors.lastname: McHugh
authors.forename: Robin A
authors.initials: RA
authors.lastname: Hanks
authors.forename: Scott R
authors.initials: SR
authors.lastname: Millis
mesh_terms: D000328:Adult; D001930:Brain Injuries / Q000150:complications / Q000503:physiopathology*; D003072:Cognition Disorders / Q000209:etiology / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007807:Language Tests / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000706:statistics & numerical data; D011597:Psychomotor Performance / Q000502:physiology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D014888:Wechsler Scales / Q000706:statistics & numerical data