This thesis would not have been possible without the help of several people throughout my journey as a PhD student. First, I would like to thank my supervisors, Prof. Theng Yin Leng and Asst. Prof. Sonny Rosenthal for providing support and guidance throughout my PhD. Second, I would like to thank Assoc. Prof. Trisha T. C. Lin of the National Chengchi University, Taiwan, for providing me the opportunity to learn and experience communication research by hiring me as her project officer in NTU (2012-2013). I also thank her for supervising the first two years of my PhD study (2014-2016) until the successful defence of my thesis proposal. Later, she continued to serve as my external thesis advisory committee member after leaving NTU. I am forever grateful to her as I would not be able to enter and complete the PhD programme without her steadfast support and mentorship. Third, I would like to express my sincerest gratitude to Prof. Charles T. Salmon and to the rest of the Wee Kim Wee School's administrative and academic staff for being helpful and supportive throughout my PhD. I also thank my friends in COOL ASIA and CHESS for the emotional support. Fourth, I am grateful to countless nursing colleagues in the Philippines who assisted me during data collection. I also like to recognise the help of several hospital administrators who permitted me to collect data in their institutions. Fifth, I would like to thank my parents, Myrna Bautista and Elvis Bautista, and sister, Jeselle Bautista, for being supportive of my personal and professional endeavours, and for always believing in my capabilities. Sixth, I am grateful to my wife, Therese Anne Bautista, for being there with me, especially during the trying times of my PhD journey. I hope that I will be able to spend more quality time with her upon completing this thesis. Lastly, I am eternally grateful to the Lord Almighty for blessing me with the courage to face all trials in life. Thank you for all His unconditional love and for giving me supportive colleagues, friends, and loved ones that I cherish in my life. viii