“Between the ages of 25 and 60, the time users need to complete website tasks increases by 0.8% per year.
In other words, a 40-year-old user will take 8% longer than a 30-year-old user to accomplish the same task. And a 50-year-old user will require an additional 8% more time. (Mathematically inclined readers will note that this increase is linear, not exponential.)”
From UseIt.com, Jakob Nielsen’s site. There are a lot of links to sell, sell, sell their reports but the article is still worth a read. And worth thinking about if you have clients whose sites attract middle-aged visitors.
