摘要
【目的】基于眼动实验分析在线健康信息可读性对用户认知负荷和信息加工绩效的影响。【方法】构建具有高/低可读性的两组健康信息网页作为实验刺激材料,检验在线健康信息可读性对信息加工绩效的影响效应,认知负荷的中介效应及性别和任务复杂性的调节效应。【结果】可读性通过影响总注视时间、注视点个数显著影响眼跳距离;通过影响总注视时间、注视点个数以及首次进入时间显著影响任务总时长;通过影响首次进入时间显著影响搜寻结果的准确性。任务复杂性显著调节可读性与首次进入时间之间的关系。【局限】可读性的计算未考虑用户主观因素;研究样本以高校学生为主;需进一步结合用户自我报告方法来补充论证。【结论】推动用户信息行为研究深入到信息加工层次,从视觉角度提高可读性以减轻用户认知负荷,促进健康信息利用效率,优化用户健康信息搜寻体验。
[Objective] This paper analyzes the impacts of health informtion readability on users’ cognitive load and information processing. [Methods] We created two sets of health education webpages with high and low readability as experimental materials for the eye tracking tests. Then, we explored the mediating effects of cognitive load and the moderating effects of gender and task complexity. [Results] We found that readability posed significant impacts on saccade distance, as well as the total fixation duration and counts. Readability also significantly influenced the total duration of completed tasks and the accuracy of search results. Task complexity moderated the influence of readability on the time of first fixation. [Limitations] We did not consider the subjective factors of readability and the participants were mainly college students. A self-report method should be included in future studies. [Conclusions] This study promotes user information behavior research to the level of information processing. Improving readability visually could reduce users’ cognitive load, promote utilization efficiency of information, and optimize user searching experience.
作者
柯青
丁松云
秦琴
Ke Qing;Ding Songyun;Qin Qin(School of Information Management,Nanjing University,Nanjing 210023,China)
出处
《数据分析与知识发现》
CSSCI
CSCD
北大核心
2021年第2期70-82,共13页
Data Analysis and Knowledge Discovery
基金
江苏省社会科学基金项目(项目编号:20TQA003)
南京大学人文社会科学双一流建设“百层次”基金项目(项目编号:2018047)的研究成果之一。
关键词
可读性
认知负荷
信息加工
健康信息
眼动
Readability
Cognitive Load
Information Processing
Health Information
Eye-Tracking
