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arXiv · 2511.22809

AI summaries in online search influence users' attitudes

Yiwei Xu·Saloni Dash·Sungha Kang·Wang Liao·Emma S. Spiro
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Abstract

This study examined how AI-generated summaries, which have become visually prominent in online search results, affect how users think about different issues. In a preregistered randomized controlled experiment, participants (N = 2,004) viewed mock search result pages varying in the presence (vs. absence), placement (top vs. middle), and stance (benefit-framed vs. harm-framed) of AI-generated summaries across four publicly debated topics. Compared to a no-summary control group, participants exposed to AI-generated summaries reported issue attitudes, behavioral intentions, and policy support that aligned more closely with the AI summary stance. The summaries placed at the top of the page produced stronger shifts in users' issue attitudes (but not behavioral intentions or policy support) than those placed at the middle of the page. We also observed moderating effects from issue familiarity and general trust toward AI. In addition, users perceived the AI summaries more useful when it emphasized health harms versus benefits. These findings suggest that AI-generated search summaries can significantly shape public perceptions, raising important implications for the design and regulation of AI-integrated information ecosystems.

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Yiwei Xu, Saloni Dash, Sungha Kang, Wang Liao, Emma S. Spiro. 2025-12-04. AI summaries in online search influence users' attitudes. https://arxiv.org/abs/2511.22809

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