This manual is a technical resource for helping drug treatment program directors decide whether to do a follow-up of a client population and, if so, how to do one. Each chapter was written by a particular set of authors. However, the points contained in the chapters had to receive the general agreement of a committee whose membership included…

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…

This guide is designed to give teachers and students an understanding of the Human Relations Area Files (HRAF). The HRAF Files are a collection of primary source materials on selected cultures representing all major areas of the world. In general, information on man's behavior, customs, and social institutions may be found in the Files. The guide…