Poster Abstracts

Abstract

Cognitive testing for mild traumatic brain injury (mTBI) in older adults can be confounded given the higher prevalence of neurodegenerative disease with age. We investigated list learning and memory performance on the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) in 68 adults (34 mTBI, 34 controls) aged 60-76 (M=66.24, SD=4.50) years. Backward linear regression (LR) models were conducted to investigate predictors of learning and delayed memory. Predictor variables included: age, mTBI, estimated premorbid ability, mental health history, and perceived memory problems. All LR models were significant (p<.001 to .03) and accounted for 10.0% to 43.4% of the variance in learning and memory scores. RBANS learning was predicted by mTBI (p<.001), recall was predicted by premorbid ability (p=0.08), perceived memory problems (p=.03), mental health history (p=.09) and learning performance (p<.001), recognition was predicted by mTBI (p=.05) and learning performance (p=.01), and retention was predicted by age (p=.03), premorbid ability (p=.02), and reported memory problems (p=.07). Results indicate that several factors should be considered in the interpretation of learning and memory performance among older adults. mTBI in older adults seems to have a greater effect on learning and recognition discriminability versus memory consolidation.

First AuthorSarah L Kohnen
Second AuthorNatalie Sherry
Third AuthorAlicia M Kissinger-Knox