IAP2 Public Participation Spectrum
This well-known one-page chart from the International Association for Public Participation (IAP2) shows how various forms of public participation have different levels of public involvement. It categorizes public participation by the level of public impact on the decision-making process, beginning with informing the public, moving on to consulting with the public (taking feedback and ideas into consideration), then involving the public throughout the decision-making process, followed by collaborating with the public in the development of alternatives and the identification of a preferred solution, and culminating with empowering the public with decision-making power. The chart lists a few techniques that fall under each category.
Resource Link: www.iap2.org/associations/4748/files/spectrum.pdf