• Visiting Professor, University of Georgia, Athens, Ga. August 1985 - September 1986.

• Visiting Professor, Queensland University of Technology, Queensland, Australia. July - August, 1993.

• Visiting Fellow, National Taiwan Normal University, Taipei, Taiwan, November - December, 1993.

• Visiting Professor, Curtin University of Technology, Perth, Western Australia. January - April, 1994.

• Visiting Research Fellow, Queensland University of Technology, Queensland, Australia. May-June, 1995.

• Visiting scholar,CIRADE, Université du Québec à Montréal, Canada. April-May, 1996.

• Lansdowne Professor, University of Victoria, Canada. February, 1999.

• Visiting Scholar, National Institute of Education, Nanyang University, Singapore, May-June, 2004.