Formal Of A Informal Institution
association works. Informal institution refers to that it formed in the process of long-term social interaction, and accepted in the protocols, the common code of conduct. In the informal institution, ideology is in a core position, because it not only contains values, ethics, morality, customs, and habits, but also forms some "a priori" modes for formal institutional arrangements.
When both parties choose one constraint to ensure implementation of the agreement, they would often consider informal institution