複数の選択肢が提示される状況における医療の意思決定
1Department of Medicine, University of Toronto, Ontario, Canada.
JAMA
|January 25, 1995
まとめ
より多くの選択肢を追加すると,矛盾的に,人々が任意のオプションを選択する確率が低くなり,医学的な決定に影響を与える認知バイアスになります. これを理解することは,複雑な意思決定プロセスを改善するのに役立ちます.
科学分野:
- 認知心理学とは,認知心理学である.
- 医療上の意思決定をする.
- 行動経済学は,行動経済学である.
背景:
- 利用可能な選択肢の数が意思決定プロセスに影響を与える可能性があります.
- 認知バイアスを理解することは,特に医学のような高リスク分野において,効果的な意思決定に不可欠です.
研究 の 目的:
- 選択行動に対する選択肢の増加のパラドックスな効果を調査する.
- より多くの選択肢を提示すると,回避または現状のバイアスにつながるかどうかを判断する.
主な方法:
- 2つのバージョンで提示された医療シナリオを含む郵送調査が使用されました:基本 (2つのオプション) と拡張 (3つのオプション).
- 参加者の中には,医師 (家庭内科医,神経科医,神経外科医) と立法者などがいました.
- シナリオは参加者にランダムに割り当てられました.
主要な成果:
- 医師は,2つの選択肢と1つの選択肢が提示されたときに,骨格関節炎のための薬を推奨する可能性が低い.
- 同様のパターンは,頸動脈外科手術に関する神経外科医の決定や,病院の閉鎖に関する立法者の選択にも見られた.
- 選択肢が増えることで,意思決定が困難になり,現状を維持したり,選択を回避したりする傾向が生まれました.
結論:
- 追加のオプションの導入は,意思決定の難易度を高め,不行動へのバイアスやデフォルトオプションの選択につながる可能性があります.
- この認知バイアスの認識は,複雑な医療と政策の文脈で意思決定を改善するために不可欠です.
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