Peipei, thank you for giving me the chance to begin this journey. Six years ago, when I was fresh out of university, as green as moss, and painfully oblivious to the workings of academia, you responded to my floundering attempts to look for Ph.D. supervision and welcomed me into your lab. I am also thankful for your efforts to nudge me out of my comfort zone. Being the social hermit I am, there are valuable experiences (connecting with fellow scientists, venturing overseas, participating in conferences) that I would have given a miss if left to my own devices.To my TAC members: Prof. Kang Lee, I am grateful for the opportunity to work on the race projects with an international team and the guidance you provided during your earlier visits to Singapore; Assoc. Prof. Gianluca Esposito, I am grateful for your kindness and geniality, especially when I first entered the lab.To my dependable comrades: Zhao Siqi, we often seek solace in our shared experiences, as there is no greater comfort than the knowledge that we are not navigating the struggles of graduate school alone. Thank you for being a friend I could always turn to for reassurances when the future looked darker than coal. Shirley Zhang and Michelle Nee, thank you for being my pillar of support back in the early days. To my undergraduate assistants (too many of you to name!), thank you for standing by me during the days of laborious preschool visits and for your steadfast assistance throughout the drudgery of data coding and checking.To the admin staff: Li Sufei, Jennifer Goh, and Lela Ahmad, I am grateful for your constant support in admin matters. I would have been such a lost sheep without you! To the preschools, principals, teachers, and parents: Thank you for entrusting me with your children. To the children: Your laughter and chatter always brighten my day! Thank you for leaving an indelible print on my graduate life. Working with young children is never a walk in the park, but I would not trade this experience for anything in the world.To my family, thank you for being the place I call home. I am very fortunate to be able to enjoy the warmth of homecooked meals.Last but not least, I thank my Queen, Agatha Christie, and Aoyama Gosho-sensei for their wonderful works which have kept me company on many a late night.To all of you, I dedicate this thesis. vii
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