Understanding Screen-Reader Users’ Experiences with Online Data Visualizations
Understanding Screen-Reader Users’ Experiences with Online Data Visualizations
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DOI：
10.1145/3441852.3471202
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发表时间：
2021-10
期刊：
影响因子：
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通讯作者：
Ather Sharif;S. Chintalapati;J. Wobbrock;Katharina Reinecke
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文献类型：
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作者：
Ather Sharif;S. Chintalapati;J. Wobbrock;Katharina Reinecke
在线数据可视化广泛用于传达从简单统计到复杂现象的信息，支持人们从数据中获得重要见解。然而，由于数据可视化的定义视觉性质，从可视化中提取信息对于屏幕阅读器用户来说可能是困难的或不可能的。为了评估屏幕阅读器用户对在线数据可视化的挑战，我们进行了两项实证研究：（1）对9名屏幕阅读器用户的定性研究，以及（2）对36名屏幕阅读器和36名非屏幕阅读器用户的定量研究。我们的研究结果表明，由于在线数据可视化的不可访问性，与非屏幕阅读器用户相比，屏幕阅读器用户提取信息的准确性低61.48%，与在线数据可视化交互的时间多210.96%。此外，我们的研究结果表明，在线数据可视化通常是不可否认的屏幕阅读器。在可解释和可理解的可视化中，屏幕阅读器用户建议将数据的表格和文本表示作为提高在线可视化的可访问性的技术。总之，我们的研究结果提供了经验证据的不平等屏幕阅读器用户在与在线数据可视化的互动中面临的。
Online data visualizations are widely used to communicate information from simple statistics to complex phenomena, supporting people in gaining important insights from data. However, due to the defining visual nature of data visualizations, extracting information from visualizations can be difficult or impossible for screen-reader users. To assess screen-reader users’ challenges with online data visualizations, we conducted two empirical studies: (1) A qualitative study with nine screen-reader users, and (2) a quantitative study with 36 screen-reader and 36 non-screen-reader users. Our results show that due to the inaccessibility of online data visualizations, screen-reader users extract information 61.48% less accurately and spend 210.96% more time interacting with online data visualizations compared to non-screen-reader users. Additionally, our findings show that online data visualizations are commonly indiscoverable to screen readers. In visualizations that are discoverable and comprehensible, screen-reader users suggested tabular and textual representation of data as techniques to improve the accessibility of online visualizations. Taken together, our results provide empirical evidence of the inequalities screen-readers users face in their interaction with online data visualizations.