超越五用户假设：可用性测试中增加样本量的益处
Beyond the five-user assumption: benefits of increased sample sizes in usability testing.
作者信息
Faulkner Laura
机构信息
Applied Research Laboratories, University of Texas, Austin, Texas 78713-8029, USA.
出版信息
Behav Res Methods Instrum Comput. 2003 Aug;35(3):379-83. doi: 10.3758/bf03195514.
It is widely assumed that 5 participants suffice for usability testing. In this study, 60 users were tested and random sets of 5 or more were sampled from the whole, to demonstrate the risks of using only 5 participants and the benefits of using more. Some of the randomly selected sets of 5 participants found 99% of the problems; other sets found only 55%. With 10 users, the lowest percentage of problems revealed by any one set was increased to 80%, and with 20 users, to 95%.
人们普遍认为5名参与者就足以进行可用性测试。在本研究中，对60名用户进行了测试，并从整体中抽取了5名或更多的随机样本，以证明仅使用5名参与者的风险以及使用更多参与者的好处。一些随机抽取的5名参与者的样本发现了99%的问题；而其他样本仅发现了55%的问题。有10名用户时，任何一组发现的问题的最低百分比提高到了80%，有20名用户时，则提高到了95%。
Zotero 插件