About

Theo Mandel, Ph.D. is an international specialist in product user experience, usability strategy, user research, prototyping, design and usability testing. Dr. Mandel designs user-based products, websites and apps that meet client objectives and goals and are successful and enjoyable experiences for users.

Theo Mandel, Ph.D.

Theo Mandel, Ph.D.

After completing his Ph.D. in Cognitive Psychology at the University of Colorado at Boulder, Dr. Mandel joined IBM Austin in 1982 and worked for 11 years in the areas of software interface architecture, product interface design, usability testing, consulting, and education. Mandel pioneered research and design of GUIs (Graphical User Interfaces) and OOUIs (Object-Oriented User Interfaces) as part of the IBM Common User Access (CUA) group. This group designed the leading-edge object-oriented IBM OS/2 operating system user interface. Dr. Mandel worked closely with key industry vendors (Microsoft, Lotus, and other IBM partners) to define and implement software interface architecture and guidelines for Microsoft Windows and IBM’s OS/2.

Theo founded Interface Design and Development (IDD) in 1993 to provide comprehensive consulting, education, and seminars on software and Web user experience design and usability. Theo’s 20 years of experience in user interface design, user interface architecture and usability testing, has made him a well-know and well-respected consultant. Mandel has helped startups, companies and software developers review, design, and evaluate the user experience and usability of their products.