Affectivity is at the core of everything we do in life. Thus, its development is also central to learning/acquisition and is important for educational contexts. The studies presented in this volume consider the different contexts of language learning and examine different types of participants in this process. Most of them look at a formal instruction context, while others look beyond the classroom and even report on the author’s own affectivity and its involvement in learning experiences. Affectivity is discussed here in relation to learners but also to teachers in their own professional contexts of teaching foreign languages. In the majority of cases, affectivity is explored in the case of bilinguals, but there are also articles which focus on multilingual language users and their affectivity as an evolving factor.