Articles by 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).

Rent a Car in Just 0, 60, 240 or 1,217 Seconds? – Comparative Usability Measurement, CUE-8

Abstract This paper reports on the approach and results of CUE-8, the eighth in a series of Comparative Usability Evaluation studies. Fifteen experienced professional usability teams simultaneously and independently measured a baseline for the usability of the car rental website Budget.com. The CUE-8 study documented a wide difference in measurement approaches. Teams that used similar […] [Read More]

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

pp. 124 – 128 Introduction Today, no usability conference seems to be complete without one or more heated debates on participant group sizes for usability studies (Bevan, 2003; Molich, Bachmann, Biesterfeldt, & Quesenbery, 2010). In this respect, Macefield’s recent article on group sizes for usability tests is timely (Macefield, 2009). However, when reading Macefield’s article […] [Read More]

Making Usability Recommendations Useful and Usable

Abstract This paper evaluates the quality of recommendations for improving a user interface resulting from a usability evaluation. The study compares usability comments written by different authors, but describing similar usability issues. The usability comments were provided by 17 professional teams who independently evaluated the usability of the website for the Hotel Pennsylvania in New […] [Read More]