Access to electronic resources by visually impaired people
Access to electronic resources by visually impaired people
复制标题
视障人士访问电子资源
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
J. Craven
中科院分区：
文献类型：
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作者：
J. Craven
图书馆和信息管理研究中心开展的研究旨在加强对盲人和视障人士在使用数字资源时寻求信息行为的了解。数字图书馆非视觉访问项目（NOVA）旨在进一步了解用户使用网络资源的行为，特别是盲人和视力受损者检索信息的行为。使用20个有视力和20个视障人士的样本，用户进行了一些信息寻求任务，使用四种不同的电子资源。信息搜索过程的每个步骤都被记录下来（在实验室或同等水平），并询问任务前和任务后问题，以收集定性数据。结果显示，视障用户花更多的时间搜索或浏览网页的时间变化很大，这取决于网站的设计。总的来说，视障用户必须花费更多的时间浏览每个页面，特别是如果页面包含大量信息或有许多链接。观察显示，对他们使用的辅助技术有更多经验的人在任务中更成功。虽然设计师可能认为每个人都可以使用新版本的辅助技术，但情况并非总是如此。因此，设计师必须考虑到这些现实。
Research undertaken by the Centre for Research in Library and Information Management has sought to enhance understanding of information seeking behaviour of blind and visually impaired people when using digital resources. The Non-Visual Access to the Digital Library project (NoVA) aimed to develop further understanding of user behaviour with web based resources, with particular reference to retrieval of information by blind and visually impaired people. Using a sample of 20 sighted and 20 visually impaired people, users undertook a number of information seeking tasks using four different electronic resources. Each step of the information seeking process was logged (at keystroke or equivalent level) and pre-task and post-task questions were asked in order to gather qualitative data. Results revealed that visually impaired users spend more time searching or browsing the web with times varying considerably depending on the design of the site. Overall, visually impaired users have to spend more time navigating around each page, especially if, for example, the page contains a lot of information or has many links. Observations revealed that people with more experience with the assistive technology they were using were more successful with the task. Whereas designers may assume that everyone has access to the new versions of assistive technology, this is not always the case. Designers, therefore, will have to take such realities into account.