In 2016, Nivi asked me where I'd see myself in five years. Who would have guessed that the answer would be "Finishing up my thesis in the middle of a pandemic"? A PhD is a journey with ups and downs, with unexpected twists and turns. This journey would not have been possible without my travel companions, whom I would like to thank.Nivi, you were a wonderful supervisor. Thank you for believing in me and for always pushing me one step further. Thank you for being honest with both your compliments and your criticism. Tanya and Markus, thank you both for your valuable feedback and input at our thesis committee meetings and beyond. My collaborators around the globe, from Canada to Malaysia, thank you for your ideas over the years.My WortSchatzInsel labmates, thank you for cups of coffee enjoyed in the Teeküche and for ideas exchanged in the office. The WortSchatzInsel student assistants, bachelor and master students, thank you for your help with recruitment and data collection.The families who took part in my studies, thank you for volunteering your time and making our research possible in the first place.My amazing friends in Göttingen and elsewhere, thank you all for sharing the highs and lows of the PhD life with me. Konstantin, thank you for keeping me caffeinated and for the L A T E Xtemplate that makes this thesis look aesthetically pleasing.My Göttingen Lacrosse teammates, thank you for taking my mind off work when I needed it most by shooting rubber balls at me. Brezel, my cat, thank you for being the best work-from-home buddy I could ask for.My family, thank you for always encouraging my curiosity and letting me follow my passion. Mama, thank you for being there for me and always encouraging me.Opa, you are no longer with us to see me accomplish great things, but I know you would have been proud.