Quantitative Analysis on Usability of Button-Input Interfaces
Quantitative Analysis on Usability of Button-Input Interfaces
复制标题
按钮输入界面可用性的定量分析
DOI：
10.1587/transfun.e94.a.789
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
M. Miyakawa
中科院分区：
文献类型：
--
作者：
Y. Maeda;K. Tani;Nao Ito;M. Miyakawa
在本文中，我们表明，按钮输入界面的性能工作量不单调增加按钮的数量，但有一个最佳的按钮数量的意义上，性能工作量最小化。随着按钮数量的增加，搜索目标按钮变得更加困难，因此，用户的认知工作量增加。随着按钮数量的减少，用户的认知工作量减少，但他的操作工作量增加，即，操作量变得更大，因为一个按钮必须用于多个功能。通过结合认知和操作工作负载，最佳按钮数量出现了。用于测量性能的实验是这样的，我们能够描述一个多元回归方程，使用两个可观察到的变量相关的认知和操作工作量。结果，我们的方程很好地解释了数据，发现最佳按钮数量约为8个，与商业手机制造商采用的数量相似。澄清说，按钮数目接近字母表中字母数目的界面不一定容易使用。
In this paper we show that the performance workload of button-input interfaces do not monotonically increase with the number of buttons, but there is an optimal number of buttons in the sense that the performance workload is minimized. As the number of buttons increases, it becomes more difficult to search for the target button, and, as such, the user's cognitive workload is increased. As the number of buttons decreases, the user's cognitive workload decreases but his operational workload increases, i.e., the amount of operations becomes larger because one button has to be used for plural functions. The optimal number of buttons emerges by combining the cognitive and operational workloads. The experiments used to measure performance were such that we were able to describe a multiple regression equation using two observable variables related to the cognitive and operational workloads. As a result, our equation explained the data well and the optimal number of buttons was found to be about 8, similar to the number adopted by commercial cell phone manufacturers. It was clarified that an interface with a number of buttons close to the number of letters in the alphabet was not necessarily easy to use.