Grant Devine writes about four important terms, rhetor, audience, exigence, and constraints. Rhetor refers the people who communicate a message. The communicator's goal is to make others perform a specific function. Rhetors use language to persuade others to do a certain task. An example would be a friend telling another friend he hasn’t eaten all day. The friend hearing this will then offer food. The friend did not directly ask for food, but used his communication skills to get what he wanted.
The people who are intended to hear the communication are the audience. Advertisements can sometimes target a specific audience who they want to sell their products to. An advertisement about barbies will appeal to little girls, making young girls the audience.
Exigence can be looked at as ones desires. At a car dealership the car salesman has a desire to sell the car while the customer has a desire to buy the car.
Constraints are problems that hinder ones needs. A person may desire something but certain factors prevent them from achieving their desires. A boy may want to ask a girl out but fear of rejection prevents him from doing so.
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