2-4-6課題における仮説検証方略  [in Japanese] Hypothesis evaluation strategy in the 2-4-6 task  [in Japanese]

Search this Article

Author(s)

Abstract

本研究では、2-4-6課題下の仮説検証において顕著な正事例の使用傾向に関する理論を検討した。この課題では、被験者は3つ組み数に関する法則を発見するために、仮説とそれを検討するための事例を自ら考えて報告し、その事例が真の法則に当てはまっているかどうかのフィードバック(FB)を実験者から受ける。被験者はFBも利用しながら仮説検証を継続する。Oaksford&Chater(1994)は、例えば"偶数"仮説が支持された場合、被験者は背理法に立脚して"偶数-奇数"のような対比的観点を導入し、"奇数"仮説が支持されて矛盾を生じるかどうかを確認すると考えている。そこで、15名の大学生における課題遂行中のプロトコルを分析した。結果はOaksford&Chater(1994)の考えを支持しており、対比的観点の導入は全試行の70.1%で認められ、そのうち矛盾が生じた試行の82.0%の試行で対比的観点が棄却されていた。

We examined the theory of the tendency to use positive examples in the course of hypothesis testing during the 2-4-6 task. In this task, in order to identify a rule about triple numbers, subjects are required to report a hypothesis and an example to test the hypothesis, and then they receive feedback information as to whether the example is compatible with the rule. Subjects continue hypothesis testing with feedback. According to the iterative counterfactual strategy of Oaksford & Chater (1994), when the "even numbers" hypothesis was supported in a trial, subjects introduced a comparative viewpoint such as "even vs. odd" based on reductio ad absurdum in the following trial and then checked whether the "odd" hypothesis was confirmed, leading to inconsistency. Accordingly, we examined on-line protocols during an experimental session by 15 undergraduate students. The results supported the idea of Oaksford & Chater (1994). Comparative viewpoints were introduced in 70.1% of all trials, and those viewpoints were rejected in 82.0% of trials where inconsistency was verified.

Journal

  • Bulletin of Kyushu Women's University. Humanities and social sciences

    Bulletin of Kyushu Women's University. Humanities and social sciences 43(1), 51-62, 2006

    Kyushu Women's University & Kyushu Women's Junior College

Codes

  • NII Article ID (NAID)
    110005999088
  • NII NACSIS-CAT ID (NCID)
    AN10143588
  • Text Lang
    JPN
  • Journal Type
    大学紀要
  • ISSN
    09162151
  • NDL Article ID
    8679704
  • NDL Source Classification
    ZV1(一般学術誌--一般学術誌・大学紀要)
  • NDL Call No.
    Z22-663
  • Data Source
    NDL  NII-ELS 
Page Top