Dual process in large number estimation under uncertainty

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  • 二重過程理論に基づく不確実性を伴う値の推定に関する検討
  • ニジュウ カテイ リロン ニ モトズク フカクジツセイ オ トモナウ アタイ ノ スイテイ ニ カンスル ケントウ

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According to dual process theory, there are two systems in the mind: an intuitive and automatic System 1 and a logical and effortful System 2. While many previous studies about number estimation have focused on simple heuristics and automatic processes, the deliberative System 2 process has not been sufficiently studied. This study focused on the System 2 process for large number estimation. First, we described an estimation process based on participants’ verbal reports. The task, corresponding to the problem-solving process, consisted of creating subgoals, retrieving values, and applying operations. Second, we investigated the influence of such deliberative process by System 2 on intuitive estimation by System 1, using anchoring effects. The results of the experiment showed that the System 2 process could mitigate anchoring effects.

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