My special thanks also go to Professor Do Coyle, my external examiner from the School of Education, the University of Aberdeen, and Dr. Brenda Johnston, my internal examiner, who provided insightful comments and suggestions to improve this thesis.
My special thanks also go to Professor Do Coyle, my external examiner from theSchool of Education, the University of Aberdeen, and Dr. Brenda Johnston, myinternal examiner, who provided insightful comments and suggestions to improve thisthesis.