Keith E. Niedermeier & Alexander von Eye 
Statistical Analysis of Longitudinal Categorical Data in the Social and Behavioral Sciences [PDF ebook] 
An introduction With Computer Illustrations

A comprehensive resource for analyzing a variety of categorical data, this book emphasizes the application of many recent advances of longitudinal categorical statistical methods. Each chapter provides basic methodology, helpful applications, examples using data from all fields of the social sciences, computer tutorials, and exercises. Written for social scientists and students, no advanced mathematical training is required. Step-by-step command files are given for both the CDAS and the SPSS software programs.