Lisa Marie Brinkmann is a research assistant at the University of Hamburg and holds a PhD in learners’ investment and portfolio work in the French language classroom.Franziska Gerwers is a doctoral candidate and research assistant at the University of Hamburg.Sílvia Melo-Pfeifer is a full professor and researcher at the Faculty of Education, at the University of Hamburg (Germany).Claudio Millacura Salas holds a degree in Spanish from the Universidad de la Frontera in Temuco (1990), a Master's degree in Linguistics from the National School of Anthropology and History of Mexico (1997), and a PhD in Ethnohistory from the University of Chile (2012).