The "Handbook of Social Indicators and Quality of Life Research" provides a comprehensive overview of the field of quality of life (QOL) research in the early 21st century. It aims to document and analyze the development and changes in this area as the discipline evolves. The book addresses a variety of social indicators used to monitor social systems and offers insights into their significance for identifying changes and guiding social interventions. Additionally, it covers the historical development of QOL research, including its relevance in medicine and mental health, as well as concepts of happiness, positive psychology, and subjective well-being. The methodology for measuring and analyzing quality of life is also examined in depth, making the book a valuable resource for professionals and students in the social sciences.