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An international peer-reviewed journal

A Commentary of “How To Specify the Participant Group Size for Usability Studies: A Practitioner’s Guide” by Macefield

Rolf Molich

Journal of Usability Studies, Volume 5, Issue 3, May 2010, pp. 124 - 128

Article Contents


About the Authors

Rolf Molich

Rolf Molich

Rolf Molich owns and manages DialogDesign, a small Danish usability consultancy. Rolf conceived and coordinated the comparative usability evaluation studies CUE-1 to CUE-8 where a total of almost 100 professional usability teams tested or reviewed the same applications. Rolf is the co-inventor of the heuristic inspection method (with Jakob Nielsen).