An illustrated tutorial and introduction to structural equation modeling using SPSS AMOS, SAS PROC CALIS, and Stata sem and gsem commands for examples. Suitable for introductory graduate-level study. The 2015 edition is a major update to the 2012 edition. Among the new features are * Was 227 pages, now 491 pages * Had 81 figures, now has added 200 new illustrations * Now covers Stata and SAS as well as SPSS * Totally revised throughout * Includes a new "Quick Start" tutorial using the classic Wheaton dataset * Covers multi-group analysis, latent growth curve analysis, analysis of mean structures, Bayesian SEM, and mixture (latent class) modeling * New coverage of generalized SEM * New coverage of multilevel SEM * Numerous FAQs, sections on assumptions, pitfall warnings, and software tips * Links to all datasets used in the text.