School of Art and Design, Guangdong University of Technology, Guangzhou, P.R. China.
Ergonomics. 2023 Dec;66(12):2025-2038. doi: 10.1080/00140139.2023.2179670. Epub 2023 Feb 20.
This study examined how large touchscreen buttons affect user task completion time, error rate, and subjective satisfaction (ease of pointing and clicking on targets). In this experiment, 31 participants completed button click tasks of square targets placed at 30 (5 × 6) different locations, with seven button sizes (10 mm, 30 mm, 50 mm, 70 mm, 90 mm, 110 mm, and 130 mm). Repeated measures ANOVAs showed that on a 65'' large touch screen (W 1428 × H 803 mm), 70 mm buttons achieved essentially the best performance in completion time, 50 mm in error rates, and 90 mm in subjective satisfaction, respectively. We also compare the differences in efficiency among different button areas and button sizes. The surrounding area and lower area require a bigger button size to achieve the best performance in terms of error rates and subjective satisfaction. The right area requires a bigger optimal button size than the left area considering error rates, while it is the opposite for subjective satisfaction. This study investigates how the size and location of buttons on the increasingly popular large touch screen affect user experience. The study reveals that 70, 50, 90 mm size buttons are recommended when speed, accuracy and satisfaction are priorities respectively. The interaction between button size and button area is significantly different. The surrounding area and lower area require a bigger button size to achieve the best performance in terms of error rate and subjective satisfaction. Considering error rates, the right area requires a bigger optimal button size than the left area, while it is opposite for subjective satisfaction. These findings could facilitate the optimal design of usable large touch screens.
这项研究考察了大屏幕上的大尺寸触摸按钮如何影响用户完成任务的时间、错误率和主观满意度（目标的点击精准度和舒适度）。在这个实验中，31 名参与者完成了放置在 30 个（5x6）不同位置的正方形目标的按钮点击任务，按钮尺寸有七种（10mm、30mm、50mm、70mm、90mm、110mm 和 130mm）。重复测量方差分析表明，在 65 英寸大尺寸触摸屏（1428mm×803mm）上，70mm 按钮在完成时间方面表现最佳，50mm 按钮在错误率方面表现最佳，90mm 按钮在主观满意度方面表现最佳。我们还比较了不同按钮区域和按钮尺寸之间的效率差异。在考虑错误率的情况下，对于周边区域和下方区域，需要更大的按钮尺寸才能获得最佳的错误率和主观满意度，而对于右区域，需要比左区域更大的最优按钮尺寸。考虑到主观满意度，情况则相反。这项研究探讨了在日益流行的大屏幕上按钮的大小和位置如何影响用户体验。研究表明，在速度、准确性和满意度优先的情况下，分别推荐使用 70mm、50mm 和 90mm 尺寸的按钮。按钮尺寸和按钮区域之间的交互作用显著不同。在考虑错误率的情况下，对于周边区域和下方区域，需要更大的按钮尺寸才能获得最佳的错误率和主观满意度，而对于右区域，需要比左区域更大的最优按钮尺寸。对于主观满意度，情况则相反。这些发现可以促进可用大尺寸触摸屏的优化设计。
