デフォルトが選択と自発的決定の感覚に及ぼす影響

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書誌事項

タイトル別名
  • The influence of default options on choice and the perception of voluntary decision-making
  • デフォルト ガ センタク ト ジハツテキ ケッテイ ノ カンカク ニ オヨボス エイキョウ
公開日
2025-11-30
DOI
  • 10.14966/jssp.2024-033
公開者
日本社会心理学会

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説明

<p>Default options are known to strongly shape behavior, with individuals more likely to select the preset alternative. However, less is understood about how defaults affect people’s subjective sense of making a voluntary decision. This article examined the default effect in the context of recruiting participants for psychology experiments. In Study 1 (N＝135), participants were randomly assigned to an opt-out condition (participation as the default) or an opt-in condition (non-participation as the default) and asked to select preferred time slots for an upcoming study. In Study 2 (N＝108; undergraduate psychology students in Japan), a similar procedure was followed, with the addition of self-report measures assessing participants’ perceived voluntariness of their decision. In both studies, participants in the opt-out condition signed up for more slots compared to those in the opt-in condition. Furthermore, in Study 2, participants reported a stronger sense of voluntary decision-making when their choices aligned with the default, that is, signing up for more slots in the opt-out condition and fewer slots in the opt-in condition. Together, these findings suggest that default settings influence not only behavioral outcomes but also the subjective perception of voluntary decision-making.</p>

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