Introduction Social participation and membership in nongovernmental organizations are important factors in creating civil and democratic societies. Participation is not a new concept but participation and cooperation are increasingly important. The capacity for cooperation has increased with changes in technology, and the issues we face are too complicated to be solved by a limited number of people (Saeedi, 2004) Professional associations are one manifestation of participation. They are social organizations established to satisfy the needs of people with the same aims and interests. Professional associations have a crucial role in the growth and development of a profession its promotion. Recognizing the capacities of professional associations, we can promote the participation culture and satisfy the needs of a group of people (Sohanian Haghighi, 2006)
