http://www.stat.sinica.edu.tw/statnewsite/seminar/show/1722/
題目：作業轉換中所造成的衝突(Task Conflict in Task Switching)
演講者：Prof. Shulan Hsieh（謝淑蘭教授） (國立成功大學心理學系、健康照護科學研
究所)
時間：2011 Oct 31 (Mon), 10:30 AM
地點：中央研究院統計所二樓交誼廳
歡迎有興趣的同學參與演講!
Abstract:
Task switching requires maintaining readiness to execute any task of a given
set of tasks. However, when tasks switch, the readiness to execute the
now-irrelevant task generates interference, as seen in the task rule
incongruence effect. Overcoming such interference requires highly fine-tuned
inhibition that impairs task readiness only minimally. In this talk, three
forms of task conflicts will be delineated in the scenarios of shifting
between two tasks, three tasks, and four tasks respectively. More
importantly, this talk will highlight a new form of task conflict in the
scenario of shifting among four tasks. In experiments involving two object
classification tasks and two location classification tasks, we (with Nachshon
Meiran) show that irrelevant task rules that generate response conflicts are
inhibited. This Competitor Rule Suppression (CRS) is seen in response slowing
in subsequent trials, when the competing rules become relevant. CRS is shown
to operate on specific rules without affecting similar rules and to operate
on the competing responses only when generated by the specific competing
rule. Using Event Related Potentials, we show CRS to operate during the cue
epoch, suggesting that it involves the rules rather than the responses.
Implications for current formal theories of task switching are discussed.
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