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Supporting user-perceived usability benchmarking through a developed quantitative metric

机译：支持用户感知的可用性通过开发的定量指标进行基准测试

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摘要

Most user-centered assessment activities for ensuring usability are principally focused on performing formative evaluations, enrolling users to complete different tasks and thus obtaining indicators such as effectiveness and efficiency. However, when considering broader scenarios, such as in User Experience (UX) assessments, user perceived satisfaction (or perceived usability) is even much more relevant. There are different methods for measuring user perception, however most of them are mainly qualitative and based on individual assessments, providing little specific support to carry out comparisons i.e., benchmarking on user-perceived usability. In this paper, we propose a quantitative metric to achieve comparative evaluations of usability perception based on Reaction Cards, a popular method for obtaining the user's subjective satisfaction in UX assessments. The metric was developed through an empirical study. Additionally, it has been validated with usability experts. Besides, we provide a supporting tool based on the developed metric, featuring a framework to store historical evaluations in order to obtain charts and benchmark levels for comparing perceived usability from different artifacts such as software products, applications categories, services, mockups, prototypes and so on. Furthermore, an evaluation involving usability professionals was achieved, providing satisfactory results to answer research questions, thus demonstrating the suitability of the approach proposed.
机译：用于确保可用性的大多数用户居中的评估活动主要集中在执行形成性评估，注册用户完成不同的任务，从而获得有效性和​​效率等指标。但是，在考虑更广泛的情景时，例如在用户体验（UX）评估中，用户感知满意度（或感知可用性）甚至更相关。有不同的方法来测量用户感知，然而大多数主要是定性的并且基于个性的评估，提供很少的特定支持，以执行比较，即对用户感知的可用性进行基准测试。在本文中，我们提出了一种定量指标，以实现基于反应卡的可用性感知的比较评估，这是一种在UX评估中获得用户主观满足的流行方法。通过实证研究开发了指标。此外，它已被可用专家验证。此外，我们提供了一种基于开发的度量的支持工具，其中包括存储历史评估的框架，以便获取用于比较来自不同工件，如软件产品，应用程序类别，服务，模型，原型等不同工件的感知可用性的图表和基准级别在。此外，涉及可用性专业人员的评估，提供了满意的结果，以回答研究问题，从而展示了提出的方法的适用性。

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