Interference can enter at any point in the process to disrupt the effectiveness of communication. Interference, which we discuss further in Chapter 3, can range from physical noise that impedes the hearing of a speech, such as a plane flying over the building, to psychological “noise” within speakers and listeners that prevents them from connecting. Three forms of interference are especially troubling. The first is speaker apprehension. Fear is an understandable reaction to public speaking experiences. The situation may seem strange, and speakers may feel exposed and vulnerable. Listeners may seem distant, unfriendly, or threatening. Beginning speakers will learn to control their fears and to convert them into positive energy that adds sparkle and power to a speech. But at the outset, these feelings can interfere with effective communication. A second form of interference is listener distraction, which imposes a barrier between an audience and a message. Listene
The Art of Public Speaking