Intraindividual Variability and Short-Term Change

Abstract
Background: Interest in the study of intraindividual variability is growing rapidly. Objective: The present collection of papers deals with both longer-term, growth and change and shorter-term intraindividual variability. Methods: The papers emphasize primarily the former within the context of analyzing large, longitudinal data sets. Also discussed are some key methodological matters. Results: Criteria to help with choosing methods and modeling with missing data are included. Conclusions: A promising direction is toward developing a more systematic and intensive conception of the meaning and significance of the wide variety of manifestations of intraindividual variability and integrating them into theories of aging.