To show that indirect reciprocity can stabilize collective action without the second-order free rider problem, we consider a large population subdivided into randomly formed social groups of size n.

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 ...

In Influence: The Psychology of Persuasion, Robert Cialdini discusses the concept of reciprocity, which is that we are hard-wired to respond positively to a gift, even if we didn’t ask for it, or even ...

THE name and fame of the lamented President McKinley will be identified in American history with the policy of reciprocity, which never had an abler and more sincere advocate. To the very last he ...

A recent push for "reciprocity" in international taxation has gained traction, based on the claim that American companies pay disproportionately high taxes abroad while foreign firms pay far less in ...

By Mike DiGirolamo Forester and scientist Suzanne Simard is well known for her landmark 1997 paper, which demonstrated that ...