ABSTRACT
In the study of any one of a wide range of economic questions, it is difficult to ignore the importance and influence of institutions. In fact, since the origins of modern economic thought, this thesis has been accepted in differing degrees by a significant number of currents and theories. However, the approaches that have explicitly taken into consideration the central role of institutions in the economy and have attempted to theorize this aspect, in other words the various schools that make up the family of institutional economics, flourished mainly at the turn of the last two centuries, either the end of the nineteenth and the beginning of the twentieth or the end of the twentieth and the beginning of the twenty-first. This family is remarkably diverse but nevertheless shares certain central concerns.
