Co-evolution of opinion synchronization mechanisms and social norms

Investigate how mechanisms that synchronize individual opinions—such as simultaneous observation or gossip—co-evolve with social norms governing indirect reciprocity, and characterize the resulting evolutionary dynamics of cooperation and reputation formation.

Background

The paper introduces a unifying framework in which the stability of cooperation depends on the degree of opinion synchronization, captured by correlations in reputational assessments. It shows that synchronized opinions facilitate stable cooperation across models (public assessment, simultaneous observation, and gossip) and emphasizes the importance of this synchronization for indirect reciprocity.

While the study analyzes fixed mechanisms that induce synchronization, it explicitly highlights an open question regarding how such synchronization mechanisms themselves evolve alongside social norms, potentially influencing which norms become stable and how cooperation is maintained.