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Today, drivers are faced with many in-vehicle activities that are potentially distracting. In many cases, they are not passive recipients of these tasks; rather, drivers decide whether or not (or how) to perform them. In this study, we examined whether drivers, given knowledge of the upcoming road demands, would strategically delay performing in-vehicle(More)
Prior research indicates that many warning symbols are poorly understood. However Lesch [Lesch, M.F., 2003. Comprehension and memory for warning symbols: Age-related differences and impact of training. J. Safety Res. 34, 495-505] found that accident scenarios could be used to improve comprehension of warning symbols. The current study further investigated(More)
PROBLEM Prior research indicates that many warning symbols are poorly understood, particularly by the elderly. METHOD The effectiveness of three different training conditions to improve comprehension and memory for warning symbols was assessed for younger (18-35 years of age) and older (50-67 years of age) participants. All three conditions paired the(More)
This study compared the effectiveness of two different types of training in improving comprehension of warning symbols by younger (aged 20-35 years) and older adults (aged 50-70 years). The verbal label training paired the symbol with a label describing its meaning while the accident scenario training further expanded on the nature of the hazard, the(More)
Age-related changes in selective attention, inhibitory efficiency, and the ability to form new associations suggest that older adults may have greater difficulty with more complex and less comprehensible symbols. We examined comprehension of symbols varying in terms of ratings of familiarity, complexity, and comprehensibility, by younger (aged 18-35) and(More)
Prior research has documented the manner in which a variety of driving performance measures are impacted by concurrent cell-phone use as well as the influence of age and gender of the driver. This current study examined the extent to which different driver groups are aware of their associated performance decrements. Subjects' confidence in dealing with(More)
INTRODUCTION The current study measured how concurrent driving and in-vehicle activities of different levels of engagement varied in terms of performance and subjective estimates of demand and performance. METHOD In this test track study, 41 younger and older drivers completed a series of cognitive tasks while driving an instrumented vehicle. One task(More)
Many studies have documented the performance decrements associated with driver distractions; however, few have examined drivers' awareness of these distraction effects. The current study measured how well-calibrated drivers are with respect to performance decrements from distracting tasks. In this test track study, 40 younger and older drivers completed a(More)
BACKGROUND A reliability study of transient workplace exposures was conducted within a case-crossover study of acute traumatic occupational hand injuries. Exposures examined included features of work equipment (unusual performance of equipment or materials, glove use), work practices (performing an uncommon work task, using an unusual work method), and(More)
If walkers can anticipate surface conditions, they can adjust their gait to help reduce the risk of a slip. This study investigated visual cues to slipperiness. Thirty-one participants made visually based judgements about 37 different floor surfaces. These judgements included ratings of slipperiness, reflectiveness, texture, traction, light/dark, likelihood(More)