Leading researchers summarize cutting-edge research and methods for the study of intraindividual variability in different behavioral domains such as cognitive and emotional functioning across the lifespan ¿ from childhood to adult development -- in this new handbook. Tightly edited to ensure consistency and accessibility, the book¿s data sets are available on the web. Intended for advanced students and researchers in developmental psychology across the lifespan or life course sociology, psychology, family studies, gerontology, education, and medicine interested in intraindividual variability of behavior or as a text for advanced data analysis courses offered in these departments.