Dr. Alfred T. Lee has been involved in the research and development of vehicle simulators for more than thirty-five years and is the author of more than three dozen article in the field. He is also the author of the 2005 book on flight simulation. He is currently president and principal scientist with Beta Research, a company which conducts research and development in virtual envionments. Formerly he was senior research psychologist at NASA-Ames Research Center, responsible for initiating, planning, and conducting research programs in human-systems integration including the development of flight simulators.