Moreover, I had the pleasure to work with great co-authors and fellow researchers, to whom I am thankful for their collaboration, valuable exchanges and sharing their experiences. Hanna Fromell -I very much enjoyed the work with you on the systematic review which resulted in Chapter 2 of this thesis. Michael Grimm, Ingmar Weber, Elad Yom-Tov and Benedictus Praditya -it was a great joy to work with you on our Facebook project which resulted in Chapter 4 of this thesis. A special thanks needs to go to Benedictus for his incredible design of our campaign advertisements. Jurjen van der Schans -it was a pleasure to work with you on the SUNI-SEA project.I am also grateful to my fellow doctoral students and colleagues at the Chair of Development Economics and the University of Passau, who started this journey together with me, who then became close friends and who made me looking forward to coming to office on every single day: Ann-Kristin, Marina, Nathalie, Nicolas, Sidiki and Stefan. Thanks to all of you for providing such a cheerful working environment at the Chair. A special thanks to Nicolas for being my office mate for three years, even during lock-downs, to Nathalie for guiding me in my first fieldwork experiences in Indonesia, to Kathi for the great parties and 'Bootshaus Schwimmen', and to Carl for numerous enjoyable coffee breaks. A big thanks also to those who proofread some parts of this thesis and helped me to cut my sometimes (very) long sentences into smaller parts: Nathalie, Olivia and Carl. To Christiana, thank you for your excellent support in any administrative task.Thanks also to the whole Development Economics Group in the EEF department in Groningen, especially Kritika, Mark and Claire. You made my stay in Groningen very special and enjoyable. Mark, thank you for your help in writing a Dutch summary.I am thankful to my friends who accompanied me throughout this journey and who helped me to stay grounded and balanced if academia became once in a while too overwhelming. A special thanks needs to go to Ronja, who was a great support and also proofread parts of my work.And last but not least, I am deeply grateful to my parents, Hannah and Thomas, to my brother, Basti, and to my families in Berlin and Freiburg for their unconditional support and love, despite my inability to explain to them in detail what I am actually working on.