Di Wang, David R Kaufman, Eneida A Mendonca, Yoon-Hu Seol, Stephen B Johnson, James J Cimino
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引用次数: 0
摘要
通常,在线搜索健康信息非常耗时,而且产生的结果不够精确,无法回答临床医生或患者的问题。PERSIVAL项目旨在通过个性化和定制搜索和呈现来解决这个问题,以满足用户和特定临床环境的需求。本文着重于对该项目的一个组成部分——查询用户界面(Query User Interface, QUI)进行认知评估。该研究考察了该系统允许用户轻松直观地表达其信息需求的能力。我们进行了一些分析,包括界面的认知演练和认知负荷的定量估计。本文还对可用性测试进行了初步分析。分析表明,QUI中有一些特征会导致更大的认知负荷,并导致受试者付出更大的努力。可用性测试的结果与这些发现一致。然而,受试者发现使用该接口生成格式良好的查询相对容易和直观。这项研究有助于界面的迭代设计和下一代PERSIVAL系统。
The cognitive demands of an innovative query user interface.
Too often, online searches for health information are time consuming and produce results that are not sufficiently precise to answer clinicians' or patients' questions. The PERSIVAL project is designed to circumvent this problem by personalizing and tailoring searches and presentation to the demands of the user and the particular clinical context. This paper focuses on a cognitive evaluation of one component of this project, a Query User Interface (QUI). The study examines the system's ability to allow users to easily and intuitively express their information needs. We performed several analyses including a cognitive walkthrough of the interface and quantitative estimations of cognitive load. The paper also presents a preliminary analysis of usability testing. The analyses suggest that there are features in the QUI that contribute to a greater cognitive load and result in greater effort on the part of the subject. The results of usability testing are consistent with these findings. However, subjects found it to be relatively easy and intuitive to generate well-formed queries using the interface. This study contributed to the iterative design of the interface and to the next generation of the PERSIVAL system.