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Author

Mohammad Salahshour

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Open access Sep 2026

The co-evolution of costly markers and cooperation in social dilemmas

Costly cooperation and the evolution of costly signals are both difficult to reconcile with simple fitness maximization, yet both are common in biological and social systems. We study a model in which agents emit costly signals and condition their actions on the signals they observe. The signals are arbitrary, non-cost...

Mahdiah Abolhasani, Saman Moghimi-Araghi, Mohammad Salahshour · 0 citations
Open access Aug 2026

Risk and retribution: how punishment uncertainty weakens norms of cooperation

Punishment can sustain cooperation, but in real-world settings, sanctions are often inconsistently applied. We tested how punishment uncertainty affects cooperation when individuals can choose between institutions with predictable or unpredictable sanctions. In a 25-round public goods experiment with peer punishment,...

Vincent Oberhauser, I. Couzin, Mohammad Salahshour · 1 citation

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