This revised edition of the text has been updated with such changes as: coverage of both exploratory and confirmatory factor analysis plus illustrations of LISREL and EQS; inclusion of the relatively new EXAMINE procedure from SPSSX - a program for exploring data; a new section on the doubly multivariate problem in which subjects are measured on several dependent outcome variables at each point in time, or for each treatment/condition; and added exercises on categorical data analysis and the answers for the more difficult problems. There is a 3.5 disk (free to those adopting the text) of all data sets in the book, along with several large data sets.