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Evidence of spillovers from (non)cooperative human-bot to human-human interactions.

Journal articles  - Journal Article
Harrell, A; Traeger, ML
Published in: iScience
August 2025

It is well-documented that cooperation spills over among humans: people's cooperative choices are influenced by their (non)cooperative alters, even in downstream interactions with new partners. We ask: do (non)cooperative interactions with bots spill over to subsequent interactions with humans, and if so, how? Across two pre-registered experiments (combined N = 83,411 decisions by 4,171 participants told they are interacting with a bot or human), we demonstrate that human-bot interactions do spill over to human-human ones, and in two ways. First, interacting with a bot reduces cooperation not only during the initial interaction, but also reduces downstream cooperation toward a new human partner. Additionally, bots' (like human partners') behavior matters: interactions with bots playing tit-for-tat promote cooperation, and interactions with noncooperative bots reduce cooperation toward downstream human partners. The implementation of bots in previously human-only spaces alters human cooperation, not just toward bots, but toward other humans as well.

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Published In

iScience

DOI

EISSN

2589-0042

ISSN

2589-0042

Publication Date

August 2025

Volume

28

Issue

8

Start / End Page

113006
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Harrell, A., & Traeger, M. L. (2025). Evidence of spillovers from (non)cooperative human-bot to human-human interactions. IScience, 28(8), 113006. https://doi.org/10.1016/j.isci.2025.113006
Harrell, Ashley, and Margaret L. Traeger. “Evidence of spillovers from (non)cooperative human-bot to human-human interactions.IScience 28, no. 8 (August 2025): 113006. https://doi.org/10.1016/j.isci.2025.113006.
Harrell A, Traeger ML. Evidence of spillovers from (non)cooperative human-bot to human-human interactions. iScience. 2025 Aug;28(8):113006.
Harrell, Ashley, and Margaret L. Traeger. “Evidence of spillovers from (non)cooperative human-bot to human-human interactions.IScience, vol. 28, no. 8, Aug. 2025, p. 113006. Epmc, doi:10.1016/j.isci.2025.113006.
Harrell A, Traeger ML. Evidence of spillovers from (non)cooperative human-bot to human-human interactions. iScience. 2025 Aug;28(8):113006.
Journal cover image

Published In

iScience

DOI

EISSN

2589-0042

ISSN

2589-0042

Publication Date

August 2025

Volume

28

Issue

8

Start / End Page

113006