Direct and indirect reciprocity are key mechanisms for the evolution of cooperation. Direct reciprocity means that individuals use their own experience to decide whether to cooperate with another ...

Currently, global health is failing in equity, reciprocity, and genuine bi-directional partnerships. Global health is dominated by individuals and institutions in high-income countries (HICs) who ...

Direct and indirect reciprocity are good candidates to explain the fundamental problem of evolution of cooperation. We explore the conditions under which different types of reciprocity gain dominance ...