Articles by Rolf Molich

Mr. Molich manages DialogDesign, a small Danish usability consultancy. He conceived and coordinated the Comparative Usability Evaluation (CUE) studies where more than 140 usability professionals evaluated the same applications. He is the co-inventor of the heuristic inspection method (with Jakob Nielsen). He received the UXPA Lifetime Achievement Award in 2014.

How Professionals Moderate Usability Tests

Abstract This paper reports how 15 experienced usability professionals and one team of two graduate students moderated usability tests. The purpose of the study is to investigate the approaches to moderation used by experienced professionals. Based on this work, we present our analysis of some of the characteristics that distinguish good from poor moderation. In […] [Read More]

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]