Document Type

Article

Language

eng

Format of Original

11 p.

Publication Date

9-2012

Publisher

Cambridge University Press

Source Publication

Journal of the International Neuropsychological Society

Source ISSN

1355-6177

Original Item ID

doi: 10.1017/S1355617712000616

Abstract

This study explored whether remote blast-related MTBI and/or current Axis I psychopathology contribute to neuropsychological outcomes among OEF/OIF veterans with varied combat histories. OEF/OIF veterans underwent structured interviews to evaluate history of blast-related MTBI and psychopathology and were assigned to MTBI (n = 18), Axis I (n = 24), Co-morbid MTBI/Axis I (n = 34), or post-deployment control (n = 28) groups. A main effect for Axis I diagnosis on overall neuropsychological performance was identified (F(3,100) = 4.81; p = .004), with large effect sizes noted for the Axis I only (d = .98) and Co-morbid MTBI/Axis I (d = .95) groups relative to the control group. The latter groups demonstrated primary limitations on measures of learning/memory and processing speed. The MTBI only group demonstrated performances that were not significantly different from the remaining three groups. These findings suggest that a remote history of blast-related MTBI does not contribute to objective cognitive impairment in the late stage of injury. Impairments, when present, are subtle and most likely attributable to PTSD and other psychological conditions. Implications for clinical neuropsychologists and future research are discussed. (JINS, 2012, 18, 1–11)

Comments

Published version. Journal of the International Neuropsychological Society, Vol. 18, No. 5 (September 2012): 845-855. DOI: 10.1017/S1355617712000616. © 2012 Cambridge University Press. Used with permission.

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