Grunig’s Four models of Public Relations

Uses persuasion and manipulation to influence audience to behave as the organization desires.

Public Information model

Uses press releases and other one-way communication techniques to distribute organizational information. Public relations practitioner is often referred to as the “journalist in residence.

One-way asymmetrical model

Uses persuasion and manipulation to influence audience to behave as the organization desires. Does not use research to find out how it public(s> feel about the organization.

Two-way symmetrical model

Uses communication to negotiate with publics,resolve conflict, and promote mutual understanding and respect between the organization and its public(s).
credit to : http://iml.jou.ufl.edu/projects/Fall99/Westbrook/models.htm