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披露样本偏见无法完全纠正对党派极端的判断
Alexandra M van der Valk1, Alexander C Walker2, Jonathan A Fugelsang3
1Department of Psychology, University of Waterloo, Waterloo, ON, Canada; Geriatric Medicine Research, Nova Scotia Health & Dalhousie University, Halifax, NS, Canada.
Cognition
|January 3, 2025
概括
人们在推断群体信仰时,很难纠正偏见的样本. 即使意识到样本偏见,个人也会高估意识形态极端和同质性,从而导致政治两极分化.
科学领域:
- 社会心理学 社会心理学
- 政治科学 政治科学是指政治学.
- 认知偏见是一种认知偏见.
背景情况:
- 从有限的信息中了解群体的信仰至关重要.
- 遇到的信息中的选择偏差可以扭曲感知.
- 以前的研究强调了社会推理中的认知偏见.
研究的目的:
- 为了调查个人是否可以识别和纠正样本偏差在推断群体信仰时.
- 检查偏见与代表性样本对政治团体感知的影响.
- 探索样本偏见,意识形态极端感知和对估计的信心之间的关系.
主要方法:
- 招募了640名美国居民参加两个实验.
- 暴露参与者对偏见样本 (极端党派) 或代表性样本.
- 评估参与者关于政治团体信仰和同质性的推断.
主要成果:
- 参与者对已知样本偏差的纠正不足.
- 偏见的样本导致民主党人和共和党人对意识形态极端的高估.
- 接触有偏见的样本的参与者认为政党内部的意识形态均性更大.
结论:
- 当人们接触到有偏见的样本时,他们往往会不准确地推断出群体的信念,即使偏见是已知的.
- 对样本偏差的调整不足可能会加剧党派误解.
- 这种认知倾向可能会通过加强不准确的刻板印象来促进政治两极分化.
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