The objective of educational research has always been to better understand language learning. However, as research on learning psychology and other related fields has progressed, people’s perceptions of language learning have shifted. The purpose of this book is to shed new light on the understanding of social-emotional aspects of language learning together with core issues among young adults in a variety of language learning contexts. The particular feature of this book is to integrate the socially and the emotionally oriented perspectives of language learning. It brings the current situation among young adults to the light by focusing on the necessity of social-emotional competences for young adults in a rapidly changing society that requires them to deal with a variety of problems, stressful situations, and competing goals. In particular, the book offers unique insights into the new framework of social-emotional foreign language learning together with its theoretical foundations. Additional feature of this book is its discussion of different social-emotional assessments used in social-emotional learning. The book concludes by calling for SEL programs for young adults, which will support their social and emotional well-being in their language learning journey.