Rex Hartson is a pioneer researcher, teacher, and practitioner-consultant in HCI and UX. He is the founding faculty member of HCI (in 1979) in the Department of Computer Science at Virginia Tech. With Deborah Hix, he was co-author of one of the first books to emphasize the usability engineering process, Developing user interfaces: Ensuring usability through product & process. Hartson has been principle investigator or co-PI at Virginia Tech on a large number of research grants and has published many journal articles, conference papers, and book chapters. He has presented many tutorials, invited lectures, workshops, seminars, and international talks. He was editor or co-editor for Advances in Human-Computer Interaction, Volumes 1-4, Ablex Publishing Co., Norwood, NJ. His HCI practice is grounded in over 30 years of consulting and user experience engineering training for dozens of clients in business, industry, government, and the military.