Sarah J. Swierenga, Ph.D., C.P.E. is the director of the Michigan State University Usability & Accessibility Center and Professor by Courtesy in the Department of Telecommunication, Information Studies, and Media. She is responsible for developing and disseminating innovations in theory building, research methodologies, and technologies to enhance usability and accessibility in Web and information technology contexts. The Center serves faculty, students, and organizations at MSU, as well as external clients, through consulting, collaborative research, educational programming, publications, and the sponsorship of open houses, workshops, and symposia. A researcher and a practitioner with 20 years of experience in the scientific study of users in commercial, military, and academic environments, Swierenga possesses extensive skills in user interface design, data collection tools, and methodologies including usability tests, accessibility compliance evaluations, questionnaires, interviews, focus groups, and expert evaluations. Swierenga co-authored Constructing Accessible Web Sites (APress, 2003), and has presented widely on accessible website design, usability techniques, health communication technology, and e-learning effectiveness, which comprise her research programs. She is also a Certified Professional Ergonomist (C.P.E.).