The Effect of Disability and Approach on Touch Screen Performance during a Number Entry Task
The Effect of Disability and Approach on Touch Screen Performance during a Number Entry Task
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DOI：
10.1177/154193121005400605
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发表时间：
2010-09
期刊：
影响因子：
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通讯作者：
Sacha Duff;C. B. Irwin;J. Skye;M. Sesto;D. Wiegmann
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文献类型：
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作者：
Sacha Duff;C. B. Irwin;J. Skye;M. Sesto;D. Wiegmann
随着触摸屏技术在功能上的改进和价格上的降低，这些输入设备正变得越来越多地融入日常生活。人们经常需要在从当地杂货店到机场登机亭的地方与触摸屏进行交互。由于人们越来越有必要使用触摸屏来访问所需的产品或服务，我们进行了一项实验，以研究具有不同运动控制障碍的个体如何执行简单的数字输入任务。由于有些人也可能是轮椅使用者，并且美国残疾人法案无障碍指南允许轮椅使用者从前面或平行（侧面）接近触摸屏，因此还评估了接近对性能的影响。有和没有运动控制障碍的参与者，包括轮椅使用者，在数字键盘上执行数字输入任务，按钮和间隙大小的不同组合，而坐在触摸屏亭。结果显示，运动控制障碍的参与者比没有运动控制障碍的参与者有更多的不准确触摸。无论是否存在运动控制障碍，所有参与者的正面取向表现都比侧面取向更准确。本研究的结果可用于指导运动控制障碍者和轮椅使用者的触摸屏无障碍设计。
As touch screen technology improves in functionality and decreases in price, these input devices are becoming increasingly more integrated into daily life. People are frequently required to interact with touch screens at places ranging from their local grocery stores to airport check-in kiosks. Since it is becoming necessary for people to use touch screens in order to access needed products or services, we conducted an experiment to examine how individuals with varying motor control disabilities perform on a simple number entry task. Since some individuals may also be wheelchair users, and the Americans with Disabilities Act Accessibility Guidelines allows for the touch screen to be approachable by a wheelchair user from the front or parallel (side), the effect of approach on performance was also evaluated. Participants with and without motor control disabilities, including wheelchair users, performed a number entry task on a number pad with different combinations of button and gap sizes, while seated at a touch screen kiosk. Results revealed that participants with motor control impairments had significantly more inaccurate touches overall than participants without. Performance from the front orientation was significantly more accurate than from the side for all participants, regardless of the presence of a motor control disability. Results from this study may be used to guide design of touch screen accessibility for individuals with motor control disabilities and wheelchair users.