The importance of an effective presentation. Design principles and the use of power point, good comes from the basic concepts of communication that can be pointed to the importance of an effective presentation. As follows: 1. in the talks, but each time the listeners will listen to only 25%-50%. Of all time, and in general adult audience can listen only. 15-20 minutes more than it usually could not get hyperactive mind. 2. short-term memory (Short-term Memory). We can remember only 5-7 issues from what you hear in all. 3. people generally remembered only 10% on what they hear and 50%. From reading.
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