Rethinking volitional control over task choice in multitask environments: use of a stimulus set selection strategy in voluntary task switching.
Rethinking volitional control over task choice in multitask environments: use of a stimulus set selection strategy in voluntary task switching.
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DOI：
10.1080/17470218.2014.961935
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Weaver SM
中科院分区：
文献类型：
--
作者：
Arrington CM;Weaver SM
在多任务环境下的意志控制条件下，被试可以采用多种策略来指导任务选择。目前的研究考察了受试者是否有时会使用自上而下的控制策略来选择与任务无关的刺激维度，如位置，来指导任务选择。我们称这种方法为刺激集选择策略。使用自愿任务切换程序，受试者自愿在出现在2个、4个或8个可能目标位置的字母和数字刺激之间进行分类。分析了刺激可获得性的影响，通过改变两个目标刺激之间的刺激开始异步性来操纵，以及位置重复来评估刺激集选择策略的使用。在跨位置条件下，实验1显示了刺激可获得性和位置重复对任务选择的影响，这表明只有在基于位置的选择总是导致目标在所选位置的双位置条件下，被试可能在某些试验中使用刺激集选择策略。实验2在视觉上更混乱的环境中重复并扩展了这些发现。这些结果表明，与当前自愿任务切换中的任务选择模型相反，任务选择的自上而下控制可能发生在没有形成执行特定任务的意图的情况下。
Under conditions of volitional control in multitask environments, subjects may engage in a variety of strategies to guide task selection. The current research examines whether subjects may sometimes use a top-down control strategy of selecting a task-irrelevant stimulus dimension, such as location, to guide task selection. We term this approach a stimulus set selection strategy. Using a voluntary task switching procedure, subjects voluntarily switched between categorizing letter and number stimuli that appeared in two, four, or eight possible target locations. Effects of stimulus availability, manipulated by varying the stimulus onset asynchrony between the two target stimuli, and location repetition were analyzed to assess the use of a stimulus set selection strategy. Considered across position condition, Experiment 1 showed effects of both stimulus availability and location repetition on task choice suggesting that only in the 2-position condition, where selection based on location always results in a target at the selected location, subjects may have been using a stimulus set selection strategy on some trials. Experiment 2 replicated and extended these findings in a visually more cluttered environment. These results indicate that, contrary to current models of task selection in voluntary task switching, the top-down control of task selection may occur in the absence of the formation of an intention to perform a particular task.
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影响因子：
4.3
作者：
Devaine M;Waszak F;Mamassian P
通讯作者：
Mamassian P
DOI：
10.1007/s00426-009-0234-2
发表时间：
2009-07
期刊：
Psychological research
影响因子：
--
作者：
Hommel B
通讯作者：
Hommel B
影响因子：
8.2
作者：
Arrington, CM;Logan, GD
通讯作者：
Logan, GD
影响因子：
3.5
作者：
Demanet, Jelle;Verbruggen, Frederick;Vandierendonck, Andre
通讯作者：
Vandierendonck, Andre
DOI：
10.1037/0096-1523.26.1.234
发表时间：
2000-02-01
影响因子：
2.1
作者：
Lamb, MR;Pond, HM;Zahir, G
通讯作者：
Zahir, G