測定上のギャップ?調査票と採点方法が党派的知識格差に与える影響
Lucas Shen1, Gaurav Sood2, Daniel Weitzel3
1Senior Scientist, Institute for Human Development and Potential, Agency for Science, Technology and Research, Singapore, Singapore.
Public opinion quarterly
|December 12, 2025
まとめ
米国の政治知識における党派間の格差は、知識のある党派が意図的に間違った答えを選ぶことではなく、意図的な推測によって誇張されている。調査方法を調整すると、より小さく、より正確な知識の違いが明らかになる。
科学分野:
- 政治学
- 調査方法論
- 心理学
背景:
- 米国では、政治知識における党派間の格差は大きい。
- 市販の調査では、調査設計により、これらの格差が過大評価されている可能性がある。
- 知識のある「応援」ではなく、意図的な推測が、議論されている説明である。
研究 の 目的:
- 党派的知識格差における確信のある信念と意図的な推測を区別すること。
- 政治知識の測定に対する調査票の特徴の影響を評価すること。
- 政治知識における真の党派間の差異を決定すること。
主な方法:
- 市販の調査において、知識項目を操作する実験を実施した。
- 標準的な調査尺度と修正された調査尺度を使用して、党派間の知識格差を比較した。
- 報告された知識における上方バイアスの原因を特定するためにデータを分析した。
主要な成果:
- 推測を助長する特徴を持つ調査項目は、党派間の知識格差を誇張する。
- これらの特徴を除去すると、党派間の格差は約40%減少した。
- 知識のある党派による「応援」ではなく、知識の少ない党派による意図的な推測が、このバイアスを説明するものである。
結論:
- 市販の調査データは、政治知識における党派間の差異を過大評価している可能性が高い。
- 調査設計は、政治知識の測定と党派間の対立に大きな影響を与える。
- 報告されている党派間の知識格差のかなりの部分は、方法論的な人工物に起因するものである。
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