While I spend my last few hours as a thirty-something I was delighted to read a piece by Jakob Neilsen worryingly titled “Middle-Aged Users’ Declining Web Performance“:
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.)
But it’s not apparently all bad:
Does this mean that people in their 40s or 50s can’t do their jobs? Not at all. There are many other ways in which people get better with age.
Individual differences swamp the tiny age-related difference in the 25- to 60-year-old group. Users are extraordinarily variable in their use of websites and intranets.
I have a 5-5-5 rule for task times while using websites: Across a broad range of studies, our data shows that
- the slowest 5% of users are
- about 5 times as slow
- as the fastest 5% of users,
meaning that the slowest users need 400% more time to perform the same tasks. The 0.8% difference caused by each year of aging pales in comparison.
So, a fast 50-year-old will beat a slow 30-year-old every day — by several hundred percent.
Hopefully, I’m not one of the people in the slowest 5% 🙂 Time to refocus my efforts on “My Brain“.
(No this is not an April Fool)










