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Human cooperation is strong among individuals but fragile between groups

Crossref DOI link: https://doi.org/10.1038/s44159-026-00580-z

Published Online: 2026-06-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

Authors

Van Lange, Paul A. M. https://orcid.org/0000-0001-7774-6984
Bergmann, Paul K. https://orcid.org/0009-0004-5467-1544
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Text and Data Mining valid from 2026-06-12

Version of Record valid from 2026-06-12
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Article History

Accepted: 18 May 2026

First Online: 12 June 2026

Competing interests

: The authors declare no competing interests.