I think this question refers to social psychology in general as it applies to the workplace. The 'persuasive messages' include non-verbal communications which are conveyed by example. Following are two examples:
If the President of your company wears Hawaiian shirts to work, would not the employees be inclined towards casual ...
The solution discusses social psychology in general as it applies to the workplace, and what is meant by using persuasive messages. Several examples are given to demonstrate the subtle application of non-verbal messages in the workplace as well as the world of advertising.