Design and evaluation of technologies for disabled and elderly people.
Accessibility of the World Wide Web for disabled people.
Psychological aspects of the introduction and use of new technologies.
2001 - 2005 Professor of Human Computer Interaction, City University London;
1993 - 2001 various appointments at University of Hertfordshire, including Professor of Psychology and Director of Sensory Disabilities Research Unit;
1992 - 1993 Research Psychologist, Royal National Institute for the Blind, London;
1986 - 1993 Lecturer, School of Cognitive and Computing Sciences, University of Sussex.