for their insightful advice in the development of my dissertation study. I also would like to especially thank my Chinese colleagues, including Dr. Danhua Lin and Ms. Xiaolei Wang in Beijing Normal University, as well as Dr. Hongfei Du and Dr. Peilian Chi in University of Macau. I appreciate their assistance and guidance on the data collection. Without their great contributions, I would not have been able to successfully conduct this international research and collect data with high quality.

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... ally, I would like to thank my wife, Wei Wang, who always provides her unlimited support and her understanding throughout the study project. Wei is always my great companion and the most important source of love.