Researchers in the psychological perspective assume that psychological variables cause people to act as they do. First, identify a psychological variable that can cause a receiver to respond to a message in a particular way. Describe how this variable works by using it in a communication proposition; e.g., “The higher (or lower) the . . . .” Second, identify a psychological variable that can cause a speaker to exhibit specific communication behavior. Describe how this variable affects the speaker’s behavior by using it in a communication proposition.