检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:王宋婷 丁刚强 曹碧华[1] 杜玮玮 李富洪[1] Wang Songting;Ding Gangqiang;Cao Bihua;Du Weiwei;Li Fuhong(Department of Psychology,Jiangxi Normal University,Nanchang,330000;Department of Brain and cognitive neuroscience research center,Liaoning Normal University,Dalian,116000)
机构地区:[1]江西师范大学心理学院,南昌330022 [2]辽宁师范大学脑与认知神经科学研究中心,大连116000
出 处:《心理科学》2021年第2期290-295,共6页Journal of Psychological Science
基 金:国家自然科学基金项目(31860728,31571118,31760285);江西省社科规划一般项目(17JY09)的资助。
摘 要:工作记忆与认知灵活性是执行功能的两个核心成分,但两者之间的关系并不清晰。本研究在一个数字大小交替比较任务中操纵工作记忆负荷,考察转换代价在不同记忆负荷下的差异。结果显示与非转换条件相比,转换条件下的反应时更长,正确率更低。另外,高记忆负荷下的转换代价显著高于低记忆负荷下的转换代价。这些结果表明工作记忆负荷越大,转换越难,代价越大。Working memory(WM)and cognitive flexibility are the two major components of executive function.Does working memory affect task shifting?This issue is still controversial.Some researchers had found that the switching cost was not affected by working memory,so working memory was not associated with cognitive flexibility.However,other researches had shown that working memory was closely related to task shifting and resource constraint of working memory was one of the main sources of switch cost.So far,most studies on the relationship between working memory and task switching have adopted the dual-task paradigm.The main reason of the contradictory results was that different investigators manipulated different components of working memory in the experiment.If the researchers increased the load on the central executive component of working memory in the experiment,it would have a significant impact on task switching.On the contrary,task switch cost in the experiment would not be affected by working memory load when other components of WM are manipulated.To further test this hypothesis,a Digital Updating Task(DUT)was adapted into a Digital Alternate Comparison Task(DACT).The goal of the present study is to address the interaction between working memory and task shifting by using Digital Alternate Comparison Task(DACT).Fifty-six college students aged 18-24 were tested through the DACT.The task was divided into high working memory load and low working memory load.In the study phase,participants were presented with two or three initial items,one for each figure(hexagon,square or circle).Participants were instructed to memorize the number for each shape.Then,they would be displayed with a series of new items.For each new item,participants had to compare the number for the same shape with initial item.Through the regulation of working memory load,observing the changing of switch cost under different working memory load level.According to previous researches on the correlation between working memory and task shifting.We hypot
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.170