网络受控环境下信息检索用户认知负荷动态变化分析  

Dynamic Changes of Information Retrieval Users' Cognitive Load Under a Controlled Network Environment

作　　者：李建华[1] 国佳[1] 沈旺[1] 

机构地区：[1]吉林大学管理学院,长春130025

出　　处：《图书情报工作》2012年第10期55-60,94,共7页Library and Information Service

摘　　要：采用基于Stroop效应的双任务方法,在中国知网新版检索平台和旧版检索平台环境下,对信息检索过程中用户的认知负荷进行研究。研究发现:①信息检索过程中用户平均认知负荷是动态变化的;②任务阶段、任务难度对第二任务颜色不匹配案例影响显著;③在检查结果列表阶段,新版检索平台较旧版平台要求用户付出更多努力。研究同时表明,提供语义类别的益处大于界面复杂度提高的不利影响。The authors employ a dual-task method based on the Stroop effect to study users＇ cognitive load on information retrieval which is done in the new retrieval platform and old retrieval platform of CNKI, and find that： i） the average cognitive load varies by search task stages; ii） task stage and task difficulty have a significant effect to no-color-match secondary task cases; iii） the increased complexity of interactions with search results list in new retrieval platform of CNKI imposes a higher mental effort on the task stage of checking search results list. But the research also shows that the benefits provided by the semantic category are greater than the harmful effects of the increase of interface complexity.

关 键 词：双任务方法 信息检索 认知负荷 

分 类 号：G353.1[文化科学—情报学]