EQS

EQS is a statistical software package distributed by Multivariate Software for producing and analyzing structural equation models. Two main mathematical systems exist for specifying linear structural equations models (SEM), the LISREL, and Bentler–Weeks (BW) conceptualizations. In the LISREL approach, measurement and simultaneous equations models are strictly separated. The former relates observed to latent variables, while the latter relates latent variables to each other. In [Page 591]the BW approach, implemented in EQS, any type of SEM model is simply a set of equations, hence the name EQS. This entry reviews how EQS handles equations and variances or covariances, details the model and output files of EQS, describes the Diagrammer and Build_EQS functions, explains how the BW model is set up in EQS and how statistical methods ...