To Professor Stephen Page, for his support and advice and for providing opportunities for professional growth throughout my studies at Queen's University, Kingston, Canada, I wish to express my deepest appreciation. This research would not have been completed without his critical guidance, assistance, and patience. Professor Page took a great personal interest in this research. He also provided strong and needed support for me from beginning to end. His responsiveness and encouragement were unfailing. I acknowledge with thanks Klara Majthényi King for her careful editorial work.