I had the honor to be advised by two brilliant professors. My advisor, prof. Maria Bernadete Marques Abaurre, helped me with all steps of the thesis, trusted my workflow, and was always available when I needed advice. My co-advisor, prof. Anne Christophe, guided me through all experimental work from the beginning, and made me feel at home in France and in LSCP during my sandwich period. Thanks to her, I met amazing people, made awesome friends, participated in interesting and exciting events, and gained a lot of confidence as an academic.I also owe much to friends, colleagues, professors, and employees from the three institutions that welcomed me on my academic path: UFPR, UNICAMP, and ENS. It was at UFPR that I learned to think as a scientist and got interested in language acquisition. I was guided by prof. Teresa Cristina Wachowicz, an amazing person and scientist, and one of my dearest friends. It was also at UFPR that I met my friends Alex, Denise, Ednei, Kayron, Luana, Thayse, Valdilena, and several others who have always given me emotional and academic support, and, most indispensably, a lot of fun time.At UNICAMP, I give special thanks to prof. Ruth Lopes, for her amazing job as my master's advisor, and prof. Thiago Motta Sampaio, who helped me numerous times during my PhD. I also thank the friends I made at UNICAMP, for the support, team work, and for giving me several hours of their time to help me with my experiments: Aline,