These articles may help:
Comparison of empirical testing and walkthrough methods in user
interface evaluation
http://portal.acm.org/citation.cfm?doid=142750.142873
User interface evaluation in the real world: a comparison of four techniques
http://portal.acm.org/citation.cfm?doid=108844.108862
Kursat Cagiltay, Ph.D.
http://www.metu.edu.tr/~kursat
> -----Original Message-----
> From: ACM SIGCHI WWW Human Factors (Open Discussion)
> [mailto:[log in to unmask]] On Behalf Of Devika Ganapathy
> Sent: Thursday, November 15, 2007 6:51 AM
> To: [log in to unmask]
> Subject: ROI of different usability methods
>
> Hi - I'm looking for data on these topics:
>
> 1) Selecting usability methods with respect to ROI. (Which methods result in
> the highest ROI?)
> 2) What kind of usability services are most demanded by customers?
>
> Please point me to related reports or information from credible sources.
>
> Regards
> Devika
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