|
Taking into account that the average speaker talks at 125 to 130 words per minute and that our brains can think four or five times that fast allows us to understand why listeners get bored and distracted. Now add to
this the fact that our language can be up to 60 percent redundant, and you have a clearer picture as to why people tune out when presentations are totally verbal in content.
When speakers use visual aids, they "entertain" or focus the visual attention of the listeners on material related to the presentation. Thus, the speakers have more influence over the total information
processing of the listeners.
The old saying, "Use a visual aid when you need to make a complex idea clear" should give way in light of the evidence to a saying such as, "Use visual aids whenever you want to enhance what you are
saying."
Types of Visual Aids
There are several types of visual aids. Some of these include white boards, chalk boards, flip charts, slides, overhead projectors, video tape, film, and of course, computer graphics.
Boards
Stand to the side of a board as you write or display your materials. Use key words only. Also, try to talk while you are writing. Not saying anything while you manipulate parts of a board can create an awkward
silence that can ruin the pacing of your presentation.
Flip Chart
Whenever using a hand held flip chart try to flip the pages up toward your face. Also, when you close it, close up toward your face--again, to draw the viewer toward your face.
Overhead Projector
Tilting the overhead screen or placing it toward the corner of the room reduces the possibility of the speaker and equipment blocking the vision of some viewers. Be sure to rehearse before using an overhead to ensure
your material is well organized and the unit is properly focused and centered.
Videotape and Film
Before starting, remind your viewers of the length of the video so they won't be looking at their watches wondering if they've walked into a three hour version of "Ghandi." You should also give a preview to
warm the audience up. Remember, volume usually needs to be adjusted differently for a filled room versus and empty one--keep this in mind and don't hesitate to make initial adjustments on the fly if absolutely
necessary.
One common mistake a field rep might make is to talk during the showing. As the presenter, you may have already seen the show a hundred times but you should behave as though it were your first time and keep quiet. If
you must talk, leave the room.
Graphics
Graphics should be well-spaced and easy to read. The size of the lettering on visuals needs to be tested prior to the design of the visual. Refer to the "readability chart" for sizing of letters.
|