Chen Shen

When imitation meets exploration: quantifying social efficiency deficits (SED) in vaccination behaviour

Vaccination behaviour plays a critical role in shaping epidemic dynamics, yet the societal consequences of decentralized vaccination decisions remain difficult to quantify. We develop a behavioural-epidemiological framework that combines adaptive vaccination dynamics, behavioural...

Zealots lower coordination barriers but undermine cooperation in multiplayer games

Abstract How can a small group of committed cooperators shape collective outcomes in social dilemmas? Previous studies have shown that zealots—individuals who always cooperate—can promote cooperation in prisoner's dilemmas. Yet real-world cooperation also involves multiplayer coo...