A framework integrating local direct reciprocity and global indirect reciprocity shows conditional cooperators resist invasion by unconditional strategies and that forgiving strategies best sustain cooperation.
Stable strategies of direct and indirect reciprocity across all social dilemmas.PNAS Nexus, 4(5):pgaf154, 2025
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A model of local and global reciprocity
A framework integrating local direct reciprocity and global indirect reciprocity shows conditional cooperators resist invasion by unconditional strategies and that forgiving strategies best sustain cooperation.