This manual is intended to improve both the design of longitudinal studies and analysis of the resulting data. Issues related to educational and developmental research have been emphasized in these eight chapters. Topics of particular interest to longitudinal researchers include stochastic models of developmental change, mathematical…

Designed as a tool for colleges and the State Board for Community Colleges in Maryland to update economic impact data on a regular basis, this manual describes sources of impact information, and how the information can be used in economic equations. Part I of the manual describes how values for short-term economic impacts of community college…