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 ...

We live in a business world fueled by greed, self-aggrandizement, and artificial relationships that lack real depth, purpose and meaning. For example, a company’s good intentions to build momentum ...

Tariffs are back in the headlines, and the noise is loud. The question I keep hearing is simple: will they help or hurt? My view is clear. Tariffs only work when policy is steady, signals are clear, ...

Learn about the Constitutional Concealed Carry Reciprocity Act. It would allow licensed permit holders to carry handguns ...

Shaneen Allen, a Philadelphia mother of two, was arrested during a traffic stop three years ago after she crossed from Pennsylvania into New Jersey with a loaded .380-caliber Bersa Thunder handgun -- ...

No, Trump didn’t expand conceal carry reciprocity, though he’s promised to sign legislation doing so If Your Time is short President Donald Trump hasn’t expanded concealed carry reciprocity in the ...

Of all the political and cultural issues that divide red states from blue ones, none is more volatile than guns and who can carry them. Conservative rural states like Arizona and West Virginia allow ...

The Trace reports on concealed carry reciprocity, and what it means if Congress passes a bill effectively allowing the residents of 29 permitless carry states to carry guns nationwide without a ...