<codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5" xml:lang="en"><docDscr><citation><titlStmt><titl xml:lang="en">Replication Data for: Homo cooperans: Understanding the nature of human cooperation</titl><IDNo agency="DOI">doi:10.60507/FK2/YIWR09</IDNo></titlStmt><distStmt><distrbtr source="archive">bonndata</distrbtr><distDate>2026-06-01</distDate></distStmt><verStmt source="archive"><version date="2026-06-01" type="RELEASED">1</version></verStmt><biblCit>Falk, Armin; Boneva, Teodora; Andre, Peter; Chopra, Felix, 2026, "Replication Data for: Homo cooperans: Understanding the nature of human cooperation", https://doi.org/10.60507/FK2/YIWR09, bonndata, V1</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl xml:lang="en">Replication Data for: Homo cooperans: Understanding the nature of human cooperation</titl><IDNo agency="DOI">doi:10.60507/FK2/YIWR09</IDNo></titlStmt><rspStmt><AuthEnty affiliation="University of Bonn">Falk, Armin</AuthEnty><AuthEnty affiliation="University of Bonn">Boneva, Teodora</AuthEnty><AuthEnty affiliation="Goethe University Frankfurt">Andre, Peter</AuthEnty><AuthEnty affiliation="Frankfurt School of Finance &amp; Management">Chopra, Felix</AuthEnty><othId role="Rights Holder">Falk, Armin</othId></rspStmt><prodStmt><software version="Stata 19.5">Stata</software><software version="R 4.5.2 and RStudio 2025.09.2">R</software><software version="Python 3.13.11">Python</software></prodStmt><distStmt><distrbtr source="archive">bonndata</distrbtr><contact affiliation="University of Bonn" email="afalk@uni-bonn.de">Falk, Armin</contact><depositr>Falk, Armin</depositr><depDate>2026-05-15</depDate></distStmt><holdings URI="https://doi.org/10.60507/FK2/YIWR09"/></citation><stdyInfo><subject><keyword xml:lang="en">Social Sciences</keyword></subject><abstract date="2026-06-04" xml:lang="en">This dataset contains the data and replication code for the paper "Homo cooperans: Understanding the nature of human cooperation", published in Science.
Summary:  Using globally representative data from an incentivized two-player cooperation experiment conducted in 125 countries
(N = 101,123), we assess the extent of human cooperation and study its individual determinants. Across the globe, about two-thirds of people choose to cooperate. The decision to cooperate is significantly shaped by cooperation beliefs, injunctive norms, and preferences. Effect sizes of these determinants vary across countries, a variation that is systematically associated with historical and cultural markers. Globally, people underestimate others’ willingness to cooperate — humans are more cooperative than they believe. A simple information treatment reduces misperceptions and causally increases cooperation.</abstract><sumDscr/></stdyInfo><method><dataColl><sources/></dataColl><anlyInfo/></method><dataAccs><setAvail/><useStmt/><notes type="DVN:TOU" level="dv">&lt;a href="http://creativecommons.org/licenses/by/4.0">CC BY 4.0&lt;/a></notes></dataAccs><othrStdyMat><relPubl><citation><titlStmt><titl>Peter Andre and Teodora Boneva and Felix Chopra and Armin Falk,
Homo cooperans: Understanding the nature of human cooperation. Science392,eaec9483(2026).</titl><IDNo agency="doi">10.1126/science.aec9483</IDNo></titlStmt><biblCit>Peter Andre and Teodora Boneva and Felix Chopra and Armin Falk,
Homo cooperans: Understanding the nature of human cooperation. Science392,eaec9483(2026).</biblCit></citation><ExtLink URI="https://www.science.org/doi/10.1126/science.aec9483"/></relPubl></othrStdyMat></stdyDscr><otherMat ID="f54516" URI="https://bonndata.uni-bonn.de/catalog/downloads/54516/homo_cooperans.zip" level="datafile"><labl>homo_cooperans.zip</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/zip</notes></otherMat><otherMat ID="f54515" URI="https://bonndata.uni-bonn.de/catalog/downloads/54515/README_homo_cooperans.pdf" level="datafile"><labl>README_homo_cooperans.pdf</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/pdf</notes></otherMat></codeBook>