What Makes Visual Aids Effective?

To help you get a sense of what makes visual media work, think about what does not work. Try to recall occasions when you have witnessed the following visual media failures:

• Websites crammed with so many images, flashing phrases, and clashing colors that they are almost unreadable
• Assembly instructions with illustrations or diagrams that are impossible to follow
• Photographs that are obviously (and badly) altered with photo-editing software
• Distracting typos or other errors in signs, advertisements, or headlines
• Tables, charts, or graphs with tiny, dense text or missing labels

In each case, the problem is that the media creator did not think carefully enough about the purpose and audience. The purpose of images, color, or flashing text on a website is to attract attention. Overusing these elements defeats the purpose because the viewer may become overwhelmed or distracted. Tables, charts, and graphs are intended to simplify complex information, but without clear labels and legible text, they will confuse the audience.

In contrast, effective visual elements are chosen or created with the purpose and audience in mind. Although a photo shoot for a magazine article might result in dozens of images, editors choose those few that work best with the article. Web designers and video game creators have an audience test their products before they are released, to ensure that people will understand how to use them. Understanding the function of different visual aids will help you use them with purpose.

Types of Visual Aids

Visual aids fall into two main categories—images and informational graphics. Images include photographs, illustrations and clip art, and video footage. Informational graphics include tables, charts, bar graphs, and line graphs.

These visual aids serve two purposes: to add emotional impact to your presentation and to organize information more clearly. With that in mind, read to find out how specific types of visual aids achieve those purposes.

Photographs

A striking photograph can capture your audience’s attention far more successfully than words can. Consider including photographs at the beginning or end of your presentation to emphasize your main ideas or to accompany a particularly important point in the body of your presentation. Remember that, as with other types of graphics, less is often more. Two or three well-chosen photographs are more effective than a dozen mediocre ones.

When you choose photographs, ask yourself these questions:

• What purpose does this image serve? Will it surprise the audience? Will it provoke a strong emotional response? Does it support an important point?
• Will this photograph be more effective if shown with only a caption, or does it need additional text?
• Will the audience understand what is happening in the photograph? Is the meaning immediately evident, or does the photo need some context?
• Would editing the image make it more effective? Consider using image-editing software to crop the photo, change the brightness, or make other cosmetic changes. (Do not go overboard, though. A slightly imperfect but authentic image is preferable to one that has been obviously altered.)

To illustrate the sense of helplessness people felt in the midst of tragedy, a student could use a photograph that shows fear, weariness, or defeat on the face of the photograph’s subject.

Figure 14.3

Source: © Thinkstock

Illustrations

Illustrations, such as editorial or political cartoons, serve much the same purpose as photographs. Because an illustration does not capture a moment in time the way a photo does, it may have less impact. However, depending on your topic and the effect you want to achieve, illustrations can still be very useful. Use the same criteria for choosing photographs to help you choose illustrations.

Figure 14.4

Source: © Thinkstock

Tip

The style of an illustration or photograph affects viewers just as the content does. Keep this in mind if you are working with the stock images available in office software programs. Many of these images have a comical tone. This may be fine for some topics—for instance, a presentation on television shows for children. However, if you need to project a more serious tone, make sure you choose images to suit that purpose. Many free (or reasonably priced) image banks are available online.

Pie Charts

Pie charts are useful for showing numerical information in percentages. For example, you can use a pie chart to represent presidential election results by showing what percentage of voters voted for the Democratic presidential candidate, the Republican candidate, and candidates from other political parties.

Figure 14.5

Source: http://www.fec.gov/pubrec/fe2008/2008presgeresults.pdf

Bar Graphs

Bar graphs work well when you want to show similarities and differences in numerical data. Horizontal or vertical bars help viewers compare data from different groups, different time periods, and so forth. For instance, the bar graph in Figure 14.6 allows the viewer to compare data on the five countries that have won the most Olympic medals since the modern games began in 1924: Norway, the United States, the former Soviet Union, Germany, and Austria. Bar graphs can effectively show trends or patterns in data as well.

Figure 14.6

Source: http://www.nbcolympics.com/medals/all-time-standings/index.html

Line Graphs

Like bar graphs, line graphs show trends in data. Line graphs are usually used to show trends in data over time. For example, the line graph in Figure 14.7 shows changes in the Dow Jones Industrial Average—an economic index based on trading information about thirty large, US-based public companies. This graph shows where the Dow closed at the end of each business day over a period of five days.

Figure 14.7

Source: http://www.google.com/finance/historical?cid=983582&startdate=May+17%2C+2010&enddate=May+21%2C+2010

Exercise 1

In this exercise, you will begin to refine your ideas for incorporating media into your presentation. Complete the following steps on your own sheet of paper.

1. Revisit the list you brainstormed for Note 14.12 "Exercise 3" in Chapter 14 "Creating Presentations: Sharing Your Ideas", Section 14.1 "Organizing a Visual Presentation" and the annotated outline you developed for Note 14.17 "Exercise 4".
2. Analyze the two different types of visual aids: images and informational graphics. Identify at least two places in your presentation where you might incorporate visual aids.
3. Evaluate the purpose of the visual aid. Does it create emotional impact, or does it organize information? Is the visual effective?
4. Determine whether you will be able to create the visual aid yourself or will need to find it.

Using Software to Create Visual Aids

You can use standard office software to create simple graphics easily. The following guidelines describe how to work with word-processing software and presentation software.

Creating Graphs

Figure 14.8

Pie charts and bar and line graphs can also be created using standard office software. Although you can create these graphics within a document, you will need to work with both your word-processing application and your spreadsheet application to do so. The graph should visually explain the data using colors, titles, and labels. The use of color will help the audience distinguish information; however, avoid colors that are hard on the eyes, such as lime green or hot pink. The title should clearly state what the graph explains. Lastly, avoid using acronyms in the titles and other labels.

Creating Visual Aids by Hand

Most of the time, using computer-generated graphics is more efficient than creating them by hand. Using office software programs helps give your graphics a polished appearance while also teaching you skills that are useful in a variety of jobs. However, it may make sense to use hand-created visual aids in some cases—for instance, when showing a 3-D model would be effective. If you follow this route, be sure to devote extra time to making sure your visual aids are neat, legible, and professional.

Flip charts are inexpensive and quick visual aids used during face-to-face presentations. The flip chart can be prepared before, as well as during, the presentation. Each sheet of paper should contain one theme, idea, or sketch and must be penned in large letters to be seen by audience members farthest away from the speaker.

Writing Captions

Any media you incorporate should include a caption or other explanatory text. A captionA brief (one to two sentences) description or explanation of a visual image. is a brief, one- to two-sentence description or explanation of a visual image. Make sure your captions are clear, accurate, and to the point. Use full sentences when you write them.

Captions should always be used with photographs, and in some cases, they can be useful for clarifying informational graphics, which represent qualitative data visually. However, informational graphics may not require a caption if the title and labels are sufficiently clear. For other visual media, such as video footage, providing explanatory text before or after the footage will suffice. The important thing is to make sure you always include some explanation of the media.

Testing and Evaluating Visual Aids

Regardless of how you create your visual aids, be sure to test-drive them before you deliver your presentation. Edit and proofread them, and if possible, show them to someone who can give you objective feedback. Use the following checklist.

Searching Efficiently for Visual Media

You will probably find it most efficient to use the Internet to search for visual aids. Many students begin by typing keywords into a search engine to locate related images. However, this search technique is not necessarily efficient, for several reasons:

• It often pulls up hundreds or even thousands of images, which may be only loosely related to your search terms.
• It can sometimes be difficult to understand the image in its original context.
• It can be hard to find copyright information about how you may use the image.

A more efficient strategy is to identify a few sources that are likely to have what you are looking for, and then search within those sites. For instance, if you need a table showing average life expectancy in different countries, you might begin with the website of the World Health Organization. If you hope to find images related to current events, news publications are an obvious choice. The Library of Congress website includes many media related to American history, culture, and politics.

Searching this way has the following advantages:

• You will often find what you are looking for faster because you are not wasting time scrolling through many irrelevant results.
• If you have chosen your sources well, you can be reasonably certain that you are getting accurate, up-to-date information.
• Images and informational graphics produced by reputable sources are likely to be high quality—easy to read and well designed.

If you do choose to use a search engine to help you locate visual media, make sure you use it wisely. Begin with a clear idea of what you are looking for. Use the advanced search settings to narrow your search. When you locate a relevant image, do not download it immediately. Read the page or site to make sure you understand the image in context. Finally, read the site’s copyright or terms of use policy—usually found at the bottom of the home page—to make sure you may use the material.

If you are unable to find what you are looking for on the Internet consider using print sources of visual media. You may choose to mount these for display or scan them and incorporate the files into an electronic presentation. (Scanning printed pages may lower the quality of the image. However, if you are skilled at using photo-editing software, you may be able to improve the quality of the scanned image.)

Copyright and Fair Use

Before you download (or scan) any visual media, make sure you have the right to use it. Most websites state their copyright and terms of use policy on their home page. In general, you may not use other people’s visual media for any commercial purpose without contacting the copyright holder to obtain permission and pay any specified fees.

Copyright restrictions are somewhat more ambiguous when you wish to download visual media for educational uses. Some educational uses of copyrighted materials are generally considered fair useA legitimate use of brief quotations from source material to support and develop a writer’s ideas. This includes the use of other copyrighted media, even though the user has not formally requested the copyright holder’s permission to reproduce the media. Many educational uses of visual media are generally considered fair use as long as the user scrupulously follows certain guidelines.—meaning that it is legally and ethically acceptable to use the material in your work. However, do not assume that because you are using the media for an educational purpose, you are automatically in the clear. Make sure your work meets the guidelines in the following checklist. If it does, you can be reasonably confident that it would be considered fair use in a court of law and always give credit to the source.

Crediting Sources

As you conduct your research, make sure you document sources as you proceed. Follow the guidelines when you download images, video, or other media from the Internet or capture media from other sources. Keep track of where you accessed the media and where you can find additional information about it. You may also provide a references page at the end of the presentation to cite not only media and images but also the information in the text of your presentation. See Chapter 13 "APA and MLA Documentation and Formatting" for more information on creating a reference page.

Write captions or other explanatory text for visual media created by others, just as you would for media you created. Doing so helps keep your audience informed. It also helps ensure that you are following fair use guidelines by presenting the media with your commentary, interpretation, or analysis. In your caption or elsewhere in your presentation, note the source of any media you did not create yourself. You do not need to provide a full bibliographical citation, but do give credit where it is due.