Objective: This study examined the relationship between performance on the Trail Making Test B as a measure of executive functioning and older adults with varying levels of self-imposed driving limitations. Method: The data consisted of 365 older adult participants with no history of a neurocognitive disorder (mean age = 73.88, SD = 8.37) that were derived from a de-identified database of a longitudinal study. Participants completed a self-report questionnaire to determine if they limited their driving in one or more of seven scenarios. Based on their responses, three groups were formed: those with multiple limitations (n = 51), those with one limitation, (n = 219) and those with no limitations (n = 86). Results: A one-way ANOVA was conducted to determine if the three groups differed on their Trails B score. The overall omnibus statistic revealed a significant difference F(2, 353)= 3.702, p = .026. A Bonferroni procedure revealed a significant comparison between those with multiple driving limitations and those with no limitations (p = .023). Other comparisons were nonsignificant. Older adults who limited their driving in multiple ways (M = 171.01, SD = 95.68) took longer to complete Trails B than those with no limits (M = 137.41, SD = 75.57). Conclusion: The results show a significant association between Trails B and varying levels of self-imposed driving limitations for older adults. Those with multiple types of limitations took longer to complete an executive functioning measure than those with no limitations. Trails B measures attention, planning, sequencing, and ability to shift cognitive set. A decline in these functions is associated with older adult driver habits, and should therefore continue to be utilized in driving competence evaluations.
NEUROPSYCHOLOGICAL DOMAINS: EXECUTIVE FUNCTIONS
Executive Functioning Variables and its Relation to Self-Imposed Driving Limitations
L Wolff, J Messerly, R Tappen, J Ouslander, G Engstrom; NEUROPSYCHOLOGICAL DOMAINS: EXECUTIVE FUNCTIONS
Executive Functioning Variables and its Relation to Self-Imposed Driving Limitations. Arch Clin Neuropsychol 2015; 30 (6): 570. doi: 10.1093/arclin/acv047.222
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