由痴呆症患者和护理人员共同创建的数字回忆应用程序：可用性和眼动分析。

BACKGROUND: This research reports on a pilot study that examined the usability of a reminiscence app called 'InspireD' using eye tracking technology. The InspireD app is a bespoke digital intervention aimed at supporting personalized reminiscence for people living with dementia and their carers. The app was developed and refined in two co-creation workshops and subsequently tested in a third workshop using eye tracking technology. INTERVENTION: Eye tracking was used to gain insight into the user's cognition since our previous work showed that the think-aloud protocol can add to cognitive burden for people living with dementia while also making the test more unnatural. RESULTS: Results showed that there were no barriers to using a wearable eye tracker in this setting and participants were able to use the reminiscence app freely. However, some tasks required prompts from the observer when difficulties arose. While prompts are not normally used in usability testing (as some argue the prompting defeats the purpose of testing), we used 'prompt frequency' as a proxy for measuring the intuitiveness of the task. There was a correlation between task completion rates and prompt frequency. Results also showed that people living with dementia had fewer gaze fixations when compared to their carers. Carers had greater fixation and saccadic frequencies when compared to people living with dementia. This perhaps indicates that people living with dementia take more time to scan and consume information on an app. A number of identified usability issues are also discussed in the paper. PATIENT OR PUBLIC CONTRIBUTION: The study presents findings from three workshops which looked at user needs analysis, feedback and an eye tracking usability test combined involving 14 participants, 9 of whom were people living with dementia and the remaining 5 were carers.

背景：本研究报告了一项试点研究，该研究使用眼动跟踪技术评估了一款名为“InspireD”的回忆应用的可用性。InspireD 应用程序是一种定制的数字干预措施，旨在为患有痴呆症的人和他们的照顾者提供个性化的回忆支持。该应用程序是在两个共同创作工作坊中开发和完善的，随后在第三个工作坊中使用眼动跟踪技术进行了测试。

干预措施：使用眼动跟踪技术来深入了解用户的认知，因为我们之前的工作表明，对于患有痴呆症的人来说，出声思考协议会增加认知负担，同时也会使测试变得不自然。

结果：结果表明，在这种情况下，使用可穿戴眼动跟踪器没有障碍，参与者可以自由使用回忆应用程序。然而，有些任务在出现困难时需要观察者的提示。虽然在可用性测试中通常不使用提示（因为有人认为提示会破坏测试的目的），但我们使用“提示频率”作为衡量任务直观性的代理。任务完成率与提示频率之间存在相关性。结果还表明，与照顾者相比，患有痴呆症的人注视点较少。与患有痴呆症的人相比，照顾者的注视和扫视频率更高。这也许表明，患有痴呆症的人需要更多的时间来扫描和消费应用程序上的信息。本文还讨论了一些已确定的可用性问题。

患者或公众贡献：该研究提出了三项工作坊的研究结果，这些工作坊涉及用户需求分析、反馈和结合了眼动跟踪可用性测试的参与，共涉及 14 名参与者，其中 9 名为患有痴呆症的人，其余 5 名为照顾者。