可用性测试中的视线追踪技术

由于人机交互过程中用户性质的变化和以用户为中心的设计（user-centered design,UCD）的兴起,可用性测试成为计算机类产品设计过程的重要环节。由于传统工效学测试方法普遍存在着主观性强,样本量小、外部效度低等问题,将视线追踪技术引入可用性测试领域,尤其是应用到视觉用户界面评估过程中,能显著提高可用性测试的客观性和有效性,并有助于揭示用户的认知加工过程。目前存在多种眼动测量指标,应根据不同测试情景和测试要求慎重选用。

The Application of Eye Tracking in Usability Tests

As technology has penetrated the mainstream consumer market, the target user of computer\|based products has changed dramatically, and UCD (user\|centered design) has become the main approach in development. Therefore the role of usability test has become more and more important in the development of life circle. However, there are some defects of traditional usability tests such as subjectivity, small sample, and low external validity. The researchers may introduce the eye tracking technique into usability test, especially into user interface evaluation, by which the subjectivity and effectiveness of test can be enhanced to a higher level, and an access to the cognitive processes of user can be found. There are a great deal of measures of eye\|movement, which can be used with cautions.