How Expertise Affects a Digital-Rights-Management-Sharing Application's Usability
How Expertise Affects a Digital-Rights-Management-Sharing Application's Usability
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DOI：
10.1109/ms.2015.104
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发表时间：
2016-05
期刊：
影响因子：
3.3
通讯作者：
Urska Lah;James R. Lewis
中科院分区：
文献类型：
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作者：
Urska Lah;James R. Lewis
研究人员对数字版权管理共享 (DRMS) 应用程序进行了可用性研究，用户可以使用该应用程序保护和共享数字文件。除了识别可用性问题的标准目标之外，该研究还调查了专业知识如何影响客观和感知的可用性、可用性指标之间的相关性以及可用性结果与新兴规范相比如何。研究人员根据技能水平将 18 名研究参与者分为两组，每组 9 人。参与者执行了七项 DRMS 任务。这些组在客观可用性（成功完成任务、错误和完成时间）和感知可用性（系统可用性量表 [SUS] 的变体的评级）方面存在显着差异。两个相关性具有统计显着性（SUS 成功和错误成功）；所有六种可能的相关性均符合预期方向。根据已公布的标准，总体成功率低于平均水平； SUS 的总体平均值为平均水平。从业者的主要收获是两个实际例子。第一个涉及使用独立得出的基准来评估感知的可用性和有效性；第二个涉及测试不同的技能组。
Researchers performed a usability study of a digital-rights-management sharing (DRMS) application with which users protect and share digital files. Besides the standard goal of identifying usability problems, the study investigated how expertise affects objective and perceived usability, the correlations among the usability metrics, and how the usability outcomes compared with emerging norms. The researchers divided the 18 study participants into two groups of nine according to skill level. The participants performed seven DRMS tasks. The groups differed significantly in objective usability (successful task completions, errors, and completion times) and perceived usability (ratings of a variant of the System Usability Scale [SUS]). Two correlations were statistically significant (success with the SUS and success with errors); all six possible correlations were in the expected direction. On the basis of the published norms, the overall success rate was below average; the SUS's overall mean was average. The main takeaways for practitioners are two practical examples. The first involved using independently derived benchmarks to assess the perceived usability and effectiveness; the second involved testing different skill groups.