In view of the importance of selectivity to the understanding of the interpersonal, small group, and public communication processes, this concept must be introduced into the communication classroom. This paper introduces an instructional model that simplifies the student's understanding of the four major steps involved in the selectivity process: selective exposure, attention, perception, and retention. Discussion is included regarding possible extensions of this model and suggested areas of classroom application. A diagram of the model is included. (Author/MAI)