7th April is the World Health Day. And, comes a health related alert--affecting business and their use of PowerPoint, in relation to human capability to visualize, store and retrieve information.
By John Oates → 4th April 2007, Register, UK
"Anyone who's been a victim of "death by Powerpoint" - that glazed and distant feeling that overwhelms you when some sales droid starts their presentation - will be reassured by Aussie researchers who've discovered biological reasons for the feeling.
Humans just don't like absorbing information verbally and visually at the same time -one or the other is fine but not both simultaneously." ...
"It is effective to speak to a diagram, because it presents information in a different form. But it is not effective to speak the same words that are written, because it is putting too much load on the mind & decreases your ability to understand what is being presented." ....
There's more from the Sydney Morning Herald here, or there's an abstract of Sweller's work (pdf) here.
Professor John Sweller is not the first to question the overarching power of Powerpoint. Edward Tufte is a professor emeritus at Yale and an information and interface design expert. His 2003 book The Cognitive Style of Powerpoint: Pitching Out Corrupts Within makes similar claims.® continue reading