搜索即学习视角下知识捕获与学习效果的影响因素研究——以健康信息学习型搜索为例
摘要： 本文基于不同认知水平下的三项与健康相关的学习型搜索任务，将知识捕获、即时学习效果和持续学习效果作为不同阶段的学习效果指标，利用问卷、思维导图和录屏数据，研究搜索与学习之间的相关关系。研究发现：①健康信息素养对知识捕获有显著的正向作用，先验知识发挥了负向调节效应；②任务复杂度对即时学习效果有显著的负向作用，先验知识发挥了遮掩效应；③任务复杂度和知识捕获对持续学习效果有显著的负向作用，知识捕获的完全中介效应改变了健康信息素养和持续学习效果间的关系。学习型搜索在学习链的不同阶段产生了差异化影响，研究结果有助于深入理解用户的信息使用行为和学习发生过程。
关键词: 搜索即学习（SAL）, 知识捕获, 健康信息素养, 学习型搜索, 知识变化
Abstract: In this study, knowledge capture, immediate learning performance and continuous learning performance are used as indicators of learning effect at different phases. The relationship between search and learning is studied via questionnaire, mind map and video data collected from participants based on three health-related information tasks at various cognitive levels. It is found that: ①Health information literacy significantly improves knowledge capture, but prior knowledge has a negative moderating effect; ②Task complexity has a strong negative effect on immediate learning performance, and prior knowledge has a masking effect; ③Task complexity and knowledge capture have a significant negative effect on the continuous learning performance. The relationship between health information literacy and continuous learning performance are changed by the knowledge capture which is a full mediation variable. This study finds that learning-related search has a distinct impact in different phases of the learning chain, which is helpful to further understand information utilization and learning process.
Key words: Search as learning (SAL), Knowledge capture, Health information literacy, Learning-related search, Knowledge state change
中图分类号:
G251
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