Rolf Molich manages DialogDesign, a Danish usability consultancy, which he founded in 1993. Rolf coordinated the Comparative Usability Evaluation studies (CUE), where sixty professional usability teams independently evaluated the same websites under realistic conditions using their favorite evaluation method. Rolf is co-inventor of the heuristic evaluation method (with Jakob Nielsen).
Kasper Hornbaek is an associate professor at the University of Copenhagen. He has published at CHI about usability, is involved in national and European research projects on the industrial use of usability evaluations, and co-edited a recent issue of International Journal of Human-Computer Interaction on this issue.
Josephine Scott is Assistant VP of UX Research & Accessibility at Synchrony Financial. She facilitates customers' "ah-hah!" moments and synthesizes them into design solutions. She also advocates accessibility through training and research. Before UX, she served as a state election official and retains her passion for better civic experience. Twitter: @josies
Jeff Johnson Jeff Johnson is principal consultant at UI Wizards, a usability consultancy. He previously worked at Cromemco, Xerox, US West, HP, and Sun. He has taught at Stanford, Mills, and the University of Canterbury. He has authored HCI articles, chapters, and the books GUI Bloopers, Web Bloopers, and GUI Bloopers 2.0.