In 1991, he became the first economic historian to win the John R. Commons Award, which was established by the International Honors Society for Economics in 1965.
In 1991 Douglas North published a paper, entitled 'Institutions,' in the Journal of Economic Perspectives. This paper summarized much of his earlier research relating to economic and institutional change. North defines institutions as "humanly devised constraints that structure political, economic and social interactions". Constraints, as North describes, are devised as formal rules (constitutions, laws, property rights) and informal restraints (sanctions, taboos, customs, traditions, codes of conduct), which usually contribute to the perpetuation of order and safety within a market or society. The degree to which they are effective is subject to varying circumstances, such as a government's limited coercive force, a lack of organized state, or the presence of strong religious precept.