When you attend a presentation in Japan (where the speaker speaks in Japanese) you will find that when slides are used, they are usually filled with a great deal of Japanese text. Part of the reason for this is surely the influence of PowerPoint which encourages the user to fill the slides with text and bullets. But another reason may be the fact that the Japanese spoken language itself is more ambiguous and vague than, say, English or German. Spoken Japanese has many homonyms, words that sound the same but have different kanji. This can make spoken Japanese confusing sometimes, especially when one is attempting to explain a topic which is quite unfamiliar to the audience. Here's an excerpt from an article by Carl Becker (1986) which touches on the subject:
"This extreme plethora of homonyms in Japanese handicaps Japanese speech communication further. The more Chinese loan-words the speaker uses, the more he must pause to either verbally or pictorially (on a blackboard or palm of his hand) distinguish the word he is using from numerous homonyms. This method...detracts from the elegance and flow of the spoken language."
Becker, C. B. (1986). Reasons for the lack of argumentation and debate in the Far East. International Journal of Intercultural Relations, 10, 75-92.
Often what is very useful for Japanese presentations, especially smaller, more technical situations, is a white board. This way the presenter can write a key term in kanji when necessary. Some of the better presentations I have seen in Japan have been ones where the speaker simply used the white board from time to time as his talk progressed.
But what about the "death-by-PowerPoint" type of slide presentations? Because of the nature of Japanese language, isn't a lot of Japanese text in a slide helpful? Yes, if limited to a word or two or a very short sentence, or a quote. The key is to keep it visual. If our slide has long Japanese sentences, then we are asking the audience to listen and read at the same time, something we should avoid since we are there to talk, converse, and connect. But if we are talking about a word or two in Kanji, for example, then this can be good visual support. This is true even for English, but especially true for short burst of display text written in Japanese (even with kana scripts) and Chinese given the visual essence of the script itself.
Japan is a very visual culture. Some of the greatest graphic design, for example, is from Japan. The written language itself is pictorial, so how did we end up with so many boring text-filled "visuals" in Japanese business and academia? There are many reasons, but two I have touch on above. The first is that the PowerPoint bulleted-list style was thrust upon Japan and the techniques absorbed from the West along with the imported software. More than anything else, it is simply habit now, reinforced by scores of "how to" Japanese presentation books that preach simplicity but encourage by example presenters to fill a slide with up to seven sentences of Japanese script. Secondly, the ambiguous nature of Japanese spoken language — which puts a lot responsibility on the receiver to fill in the blanks — can often be better understood if indeed supported by a display of written text. But, in my opinion, the positive influence of such supporting display text is greatly reduced (or negated completely) when a presenter places too much text on the slide. What is too much? Anything more than a simple Japanese term, phrase, short quote, or brief bullet list is too much...even in Japan.
Below are two examples. The one on the left would not be unusual in Japan (though the content may be). The slide on the right is more of a "Presentation Zen" approach — simple, visual. The Japanese in this slide says "The Art of Storytelling." I could use this slide when I talk about how marketing is really about the stories we tell, or how presentations are in essence about storytelling and connecting with an audience to inform, persuade, or motivate, etc. Most people can relate to telling stories around a campfire...we do the same when camping in Japan. The slide can help the audience almost instantly get what I am talking about...and it can help them remember as well.