ype 1: Associated Interest Groups have formal structure such as name, national head quarter etc. They include business, industrial, trade association, labor Union, professional associations, farmer groups etc. (National Association of Manufacturers (NAM), United Auto Workers etc.)
•Type 2: Non-Associated Interest Groups lack formal structure but reflect largely unarticulated
Type 2: Non-Associated Interest Groups lack formal structure but reflect largely unarticulated social, ethnic, cultural, or religious interests.