• 1985 -- 1987: Huazhong Institute of Technology (华中工学院), Department of Mathematics
  • Position: Assistant professor, Lecturer
• 1993 -- Present: The University of Memphis, Department of Psychology
  • Position: Assistant professor, Associate professor, Professor

Other professional activities/positions

• 1999 -- 2001: Thoughtware Learning Technologies, INC.
  • Position: Director of Research and Development
• 2000 -- Present: Advanced Learning Technologies (ALT) Lab, The University of Memphis
  • Position: Director
• 2003 -- 2009: Workforce Advanced Distributed Learning Co-Lab
  • Position: Co-Director, Director
• 2009 - Present: Advanced Distributed Learning's Center for Intelligent Tutoring Systems Research & Development
  • Position: Director