Longitudinal Data Analysis for the Behavioral Sciences Using R

This book is intended to be a practical guide for the analysis of longitudinal behavioral data. Longitudinal data consist of repeated measures collected on the same subjects over time. Such data is collected by researchers in psychology, education, organization studies, public policy, and related fields. A variety of substantive research questions are addressed with longitudinal data, including how student achievement changes over time, how psychopathology develops, and how intra-group conflict evolves.