How do we effectively measure the complexities of age and the life course in today's dynamic societies? This review addresses the increasing challenges in measuring age, age structuring, and the life course, emphasizing the need for precise empirical measurement as human life studies become more detailed. This paper gives insights into the key concepts and measurement strategies in the study of human lives. It explores concepts such as different types of age, subjective age identification, age norms, life events, phases, and life review. The paper reviews state-of-the-art methods, including life history and event matrices, and provides guidance on data organization, analysis, and modeling to aid those working in social science. As our understanding of human lives evolves in contemporary and changing societies, this chapter provides a comprehensive resource for researchers. By addressing the complexities of measurement and offering practical guidance, it serves as a valuable tool for advancing sociological research on age and the life course.
As a contribution to the Annual Review of Sociology, this paper falls directly within the journal's focus on sociological theory and research. It provides a comprehensive overview of concepts and measurement strategies related to age and the life course, addressing key challenges in contemporary sociological studies. The review strengthens the journal's existing coverage of sociological methodology.