This book brings together prominent investigators to provide a comprehensive guide to doing life course research, including an "inside view" of how they designed and carried out influential longitudinal studies. Using vivid examples, the contributors trace the connections between early and later experience and reveal how researchers and graduate students can discover these links in their own research. Well-organized chapters describe the best and newest ways to: Use surveys, life records, ethnography, and data archives to collect different types of data over years or even decades Apply innovative statistical methods to measure dynamic processes that result in improvement, decline, or reversibility in economic fortunes, stress, health, and criminality Explore the micro- and macro-level explanatory factors that shape individual trajectories, including genetic and environmental interactions, personal life history, interpersonal ties, and sociocultural institutions. This book is intended for developmental, life course, and gerontological researchers in departments of sociology, psychology, human development and family studies, and gerontology, as well as graduate students in these fields. It will serve as a supplemental text in graduate-level courses that deal with lifespan development research or the life course.