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A new study from Jakob Nielsen suggests that average returns from usability work have fallen "substantially" in the last few years.
The average ROI from the projects surveyed was 83% - down from 135% six years ago, but high enough to show that they are still well worth the effort.
There are two main reasons for the decline, Jakob says:
The survey measured RoI through typical metrics such as conversion rates, traffic numbers and user performance.
Jakob says that 12% of projects still achieve major improvements (a rise by a factor of 10 or more), something that echoes the findings of our recent Usability Survey.
In it, 45% of respondents reported that their organisation had netted an ROI of 300% or more from usability investment.
So there's still plenty of low hanging fruit out there, it seems.
Related research:
Usability and Accessibility Buyer's Guide 2007
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