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- W627942872 abstract "The authors investigated the effects of age and defective vision on reaction times measured using an Internet based dynamic visual attention test. All participants downloaded a questionnaire and the test onto their own computers via the Internet. The questionnaire was used to establish the age of each participant and to identify those with eye defects, other than the need for spectacles or contact lenses, which barred them from driving. The test consisted of a moving driving scene. The primary task involved maintenance of following distance from a leading car. The secondary task involved responding to a crossing pedestrian. Pedestrians randomly crossed from one of six possible roadside positions. Visual clutter included traffic signs, bridges, trees, houses, aeroplanes and non-crossing pedestrians. Responses were made via the keyboard or mouse and reaction times to crossing pedestrians were uploaded into a central database. Regression analysis of data from 1499 British drivers, aged between 17 and 76 years, revealed a 1.5 plus or minus 0.2 ms per year (standard error) age related increase in reaction time. Post hoc analysis of drivers grouped in 5 year age cohorts revealed that reaction times remained stable up to 30 years of age, after which a progressive increase occurred (Fisher's PLSD tests carried out at the 95% confidence level). Longer averaged reaction times were found for 24 individuals barred from driving because of visual defects (552 plus or minus 18 ms standard error) compared to 24 randomly selected, age and gender matched, drivers without visual defects (537 plus or minus 13 ms standard error). However, the observed difference in reaction time was not statistically significant at the 95% level. (A) For the covering abstract see ITRD E107650." @default.
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- W627942872 date "1999-01-01" @default.
- W627942872 modified "2023-09-27" @default.
- W627942872 title "THE EFFECT OF AGE AND DEFECTIVE VISION UPON PERFORMANCE ON AN INTERNET DYNAMIC VISUAL ATTENTION TEST" @default.
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