This thesis falls within the works on the commitment. Its objective is to investigate paradigm of the binding communication. It is a question of making a link between the theories of the Persuasion and the Commitment (Joule, Girandola & Bernard, 2007).The interest of this approach is to combine two theoretical fields traditionally separated in the process connected to the attitude change and behavior. The theories of the Persuasion considerably contributed to the understanding of the mechanisms to the data processing, but also to those concerning the change of attitude. According to these theories, it is necessary to press on the ideas to reach the behavior. Conversely, the commitment recommends to act from the behavior to reach the cognitive activity. This activity leads behind an attitude change and it until the production of new behavior. Our reflection maybe put in these terms: in what measure the commitment in an act followed by the reading of a persuasive message, does it influence the cognitive aspect and the behavioral intention ?
