David Travis has been carrying out ethnographic field research and running product usability tests since 1989. He has published three books on user experience and over 30,000 students have taken his face-to-face and online training courses. He has a PhD in Experimental Psychology.
Philip Hodgson has been a user experience researcher and mentor for over 25 years. His UX work has influenced product design for the US, European, and Asian markets, for everything from finance and medical software to store displays, packaging and even baby diapers. He has a PhD in Experimental Psychology.