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The Effects Of Combining Reduced Luminance And Increased Blur On Older Driver Speed And Visual Acuity, Nathan Klein
The Effects Of Combining Reduced Luminance And Increased Blur On Older Driver Speed And Visual Acuity, Nathan Klein
All Theses
Drivers may be at more risk to themselves and other roadway users when vision is blurred or when luminance levels are reduced. Past research has investigated these visual conditions separately, finding that each degrades acuity without severely impairing steering ability. However, it is unknown how reduced luminance in combination with increased blur will affect driving performance. This study sought to quantify this combined effect on older adults' comfortable driving speed and visual acuity by testing 10 participants in a driving simulator. The majority of the luminance and blur conditions are comparable to those the driving population may realistically encounter. Participants …
Employing Strategy In Measures Of Executive Functioning, Amanda A. Yocum
Employing Strategy In Measures Of Executive Functioning, Amanda A. Yocum
ETD Archive
Although various dementia-related executive deficits have been identified, the functional state of the frontal lobe during healthy aging remains unclear (Raz et al., 2005). The proposed study examines the use of strategy in measures of executive functioning in younger and older adults. Specifically, the strategy types of a nonverbal fluency task are shown to differentially correlate with the actual output generated by participants. The strategies employed here are compared between the two age groups, illustrating that older adults use the best strategy significantly less than younger adults, even when controlling for output differences, which may support the frontal lobe hypothesis …