I call it the “Bourbon Street Caper.” It didn’t happen to me, but the experience was so absorbing, as told by an acquaintance of mine, that I feel like it did. The scene was Mardi Gras in New Orleans, ...

x-axis represents the initial perfect defector ratio (η), and y-axis represents reputation cost (γ ). In accordance with the values of η and γ , there are two phases: one in which cooperation ...

A research team led by Professor Hitoshi Yamamoto (Rissho University, Japan) has developed a new model that integrates direct and indirect reciprocity, the two core mechanisms underpinning human ...

A study led by Prof. Dr. Hitoshi Yamamoto (Rissho University) and his collaborators from Soka University, Koriyama Women's College, and the RINRI Institute has made significant strides in the field of ...