Effect of Touch Screen Button Size and Spacing on Touch Characteristics of Users With and Without Disabilities
Effect of Touch Screen Button Size and Spacing on Touch Characteristics of Users With and Without Disabilities
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DOI：
10.1177/0018720811433831
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发表时间：
2012-06-01
期刊：
影响因子：
3.3
通讯作者：
Wiegmann, Douglas A.
中科院分区：
文献类型：
--
作者：
Sesto, Mary E.;Irwin, Curtis B.;Wiegmann, Douglas A.
目的：本研究的目的是研究按键大小和间距对触控特征（力、脉冲和停留时间）的影响。第二个目的是研究残疾对触摸特征的影响。背景：触摸屏在公共场所和工作场所很常见。虽然研究已经检查了按钮大小和间距对性能的影响，但对触摸特性的影响尚不清楚。方法：52名参与者（n = 23，精细运动控制障碍；n = 14，大运动控制障碍；n = 15，无残疾）完成一项数字输入任务。按钮尺寸从10毫米到30毫米不等，按钮间距为1毫米或3毫米。结果：按钮尺寸对触摸特性有显著影响。最大和最小按钮之间施加的峰值力增加了17%，而脉冲减少了28%。与精细运动组和非残疾组相比，大运动组有更大的冲动（分别为98%和167%）和停留时间（分别为60%和129%）。所有组的峰值力相似。结论：在数字输入任务中，按键大小而非间距影响触摸特征。大运动组的停留时间和冲动明显大于精细运动组和非残疾组。应用：通过对触摸特性的研究，结合对用户性能的研究，可以指导人机界面设计策略，提高触摸屏界面的可访问性。需要进一步的研究来评估施加的峰值力和脉冲对用户性能和疲劳的影响。
Objective: The aim of this study was to investigate the effect of button size and spacing on touch characteristics forces, impulses, and dwell times) during a digit entry touch screen task. A secondary objective was to investigate the effect of disability on touch characteristics.Background: Touch screens are common in public settings and workplaces. Although research has examined the effect of button size and spacing on performance, the effect on touch characteristics is unknown.Method: A total of 52 participants (n = 23, fine motor control disability; n = 14, gross motor control disability; n = 15, no disability) completed a digit entry task. Button sizes varied from 10 mm to 30 mm, and button spacing was 1 mm or 3 mm.Results: Touch characteristics were significantly affected by button size. The exerted peak forces increased 17% between the largest and the smallest buttons, whereas impulses decreased 28%. Compared with the fine motor and nondisabled groups, the gross motor group had greater impulses (98% and 167%, respectively) and dwell times (60% and 129%, respectively). Peak forces were similar for all groups.Conclusion: Button size but not spacing influenced touch characteristics during a digit entry task. The gross motor group had significantly greater dwell times and impulses than did the fine motor and nondisabled groups.Application: Research on touch characteristics, in conjunction with that on user performance, can be used to guide human computer interface design strategies to improve accessibility of touch screen interfaces. Further research is needed to evaluate the effect of the exerted peak forces and impulses on user performance and fatigue.