Informal groups cannot rely on external enforcement to insure that members abide by their obligations. It is generally assumed that these problems are solved by social sanctions and reputational effects. The present paper focuses on roscas, one of the most commonly found informal financial...

Informal groups cannot rely on external enforcement to insure that members abide by their obligations. It is generally assumed that these problems are solved by "social sanctions" and reputational effects. The present paper focuses on roscas, one of the most commonly found informal financial...