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Across 11 state-of-the-art models, AI affirmed users\u2019 actions 49% more often than humans, even when queries involved deception, illegality, or other harms. In three preregistered experiments (\n                    <jats:italic toggle=\"yes\">N<\/jats:italic>\n                    = 2405), even a single interaction with sycophantic AI reduced participants\u2019 willingness to take responsibility and repair interpersonal conflicts, while increasing their conviction that they were right. Despite distorting judgment, sycophantic models were trusted and preferred. This creates perverse incentives for sycophancy to persist: The very feature that causes harm also drives engagement. Our findings underscore the need for design, evaluation, and accountability mechanisms to protect user well-being.\n                  <\/jats:p>","DOI":"10.1126\/science.aec8352","type":"journal-article","created":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T18:00:46Z","timestamp":1774548046000},"update-policy":"https:\/\/doi.org\/10.34133\/aaas_crossmark","source":"Crossref","is-referenced-by-count":108,"title":["Sycophantic AI decreases prosocial intentions and promotes dependence"],"prefix":"10.1126","volume":"391","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5052-2929","authenticated-orcid":true,"given":"Myra","family":"Cheng","sequence":"first","affiliation":[{"name":"Department of Computer Science, Stanford University, Stanford, CA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0002-1305-4705","authenticated-orcid":true,"given":"Cinoo","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Psychology, Stanford University, Stanford, CA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2106-4527","authenticated-orcid":true,"given":"Pranav","family":"Khadpe","sequence":"additional","affiliation":[{"name":"Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, PA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sunny","family":"Yu","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Stanford University, Stanford, CA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-0184-9339","authenticated-orcid":true,"given":"Dyllan","family":"Han","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Stanford University, Stanford, CA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6459-7745","authenticated-orcid":true,"given":"Dan","family":"Jurafsky","sequence":"additional","affiliation":[{"name":"Department of Computer Science, Stanford University, Stanford, CA, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"221","reference":[{"key":"e_1_3_2_2_2","unstructured":"M. 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