David Juhlin is a User Experience Consultant at the User Experience Center at Bentley University where he provides consulting services to clients all over the globe. David also teaches the Online UX Research Tools course as a part of Bentley’s UX Certificate program. In addition to his day-to-day work, he assists with the marketing of Journal of Usability Studies, and last year he contributed a section about tree testing to Elizabeth Rosenzweig’s book Successful User Experience. Prior to joining User Experience Center, David created his own company (GoUsability), and was an Interaction Designer at Walking Thumbs.