Conference Proceeding
Authors: Kuan-Hua Chen (University of Iowa, Iowa City, IA) , Walter W Anderson (University of Iowa, Iowa City, IA) , Michelle L Rusch (University of Iowa, Iowa City, IA) , Nazan S Aksan (University of Iowa, Iowa City, IA) , Jeffrey D Dawson (University of Iowa, Iowa City, IA) , Matthew Rizzo (University of Iowa, Iowa City, IA)
Aging can impair executive control and emotion regulation, affecting driver decision-making and behavior, especially under stress. We used an interactive driving simulator to investigate ability to make safe left-turns across oncoming traffic under pressure in 13 older (> 65 years old) and 16 middle-aged (35-56 years old) drivers. Drivers made left-turns at an uncontrolled intersection with moderately heavy oncoming traffic. Gaps between oncoming vehicles varied and increased gradually from 2 s to 10 s. Drivers made two left-turns with a vehicle honking aggressively behind (pressure condition), and two left-turns without the honking vehicle (control condition). Results showed that middle-aged drivers made more cautious turning decisions under pressure (by waiting for larger and safer gaps, p < .001), but older drivers did not. Further, older driver turning paths deviated under pressure compared to the control condition (p < .05), but the middle-aged group did not. Moreover, across all subjects, better executive function was significantly correlated with larger increases of accepted gap size from control to honking (p < .01). The findings suggest that older drivers are more sensitive to traffic challenges from environmental pressure and that neural models of older driver performance and safety must factor in age-related changes in executive control and emotion processing.
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How to Cite: Chen, K. , Anderson, W. , Rusch, M. , Aksan, N. , Dawson, J. & Rizzo, M. (2013) ““Choking Under Pressure” in Older Drivers”, Driving Assessment Conference. 7(2013). doi: https://doi.org/10.17077/drivingassessment.1523