Abstract. Research on aging in different domains largely focuses on age-related decrements or intervention-related improvements, often in controlled laboratory conditions or with psychometric tests of maximum ability or traits. This special issue on monitoring and promoting old-age health stabilization in real life focuses on the short-term and long-term age-related stabilization and maintenance in diverse psychological areas, including well-being, self-esteem, subjective health, and social interactions. One central focus in all studies is the clear focus on behaviors in real-life contexts. The papers both review and present ways in which new technologies and research approaches can provide novel opportunities for monitoring and promoting the stabilization of various aspects of health and quality of life in the daily lives of healthy older adults.