健康信息甄别中任务难度对大学生APP使用行为的影响  

Effect of Task Difficulty on APP Use Behavior for College Students in Health Information Identification

作　　者：陈静[1] 段青云 陈红丽 陆泉[2] Chen Jing;Duan Qingyun;Chen Hongli;Lu Quan(School of Information Management,Central China Normal University,Wuhan,430079;School of Information Management,Wuhan University,Wuhan,430072)

机构地区：[1]华中师范大学信息管理学院,武汉430079 [2]武汉大学信息管理学院,武汉430072

出　　处：《信息资源管理学报》2024年第2期148-161,共14页Journal of Information Resources Management

基　　金：国家自然科学基金项目“APP交互环境下移动搜索行为机理研究”(72074094)的研究成果之一。

摘　　要：研究查询页、搜索引擎结果页和详情页面中的用户行为,有助于揭示用户健康信息搜索行为机理,优化健康信息甄别服务策略。研究招募了32名用户完成两种不同难度的健康信息甄别任务,基于开放性编码获取用户使用的APP类型,以甄别过程中的查询页、搜索引擎结果页和详情页及用户主观感知有用并进行截图的页面为信息载体,从信息源选择和认知资源分配策略两个维度深入剖析用户APP使用行为。结果表明,任务难度对社区类APP的信息源选择影响显著,表现为高难度任务中用户访问的各类页面数量均更多,截图采用的信息也更多。同时,任务难度对健康类APP的认知资源分配策略影响显著,表现为高难度任务中用户会付出更多的认知资源在详情页上,减少其在查询页上认知资源分配比率,且此时的信息采用率也更高。据此,本研究揭示了健康信息甄别中任务难度对用户APP使用行为具有内外智力资源的“同步唤醒”作用,验证了健康信息甄别中的媒介依赖和权威依赖现象。Investigating user behavior on query pages,search engine result pages,and detail pages can help reveal the mechanisms of health information search behaviors and optimize strategies for health information identification services.This study recruited 32 users to complete two health information identification tasks with different levels of difficulty.Utilizing open coding,the types of APPs used by users were cataloged.Information carriers,such as query pages,search engine result pages,and detail pages used during the identification process,alongside pages users subjectively deemed useful and captured via screenshots,served as the basis for an in-depth analysis of user APP usage behaviors from two dimensions:information source selection and cognitive resource allocation strategies.The findings underscore the significant influence of task difficulty on the choice of information sources within community APPs,highlighted by an increase in the diversity of pages visited and the volume of information captured in screenshots for tasks of higher difficulty.Similarly,task difficulty significantly affects the cognitive resource allocation strategy for health APPs,demonstrated by an augmented investment of cognitive resources on detail pages for more challenging tasks.This shift entails a reduced proportion of cognitive resources allocated to query pages,alongside an elevated rate of information adoption.Accordingly,this study reveals the"synchronous awakening"effect of task difficulty on user APP behavior in health information identification,confirming the phenomena of media dependence and authority dependence within this context.

关 键 词：健康信息甄别 任务难度 APP页面 信息源选择 认知资源分配策略 

分 类 号：G252[文化科学—图书馆学]