SIMPLIS(ID:8231/)

Command language for LISREL etc
References:
  • LISREL 8: Structural Equation Modeling with the SIMPLIS Command Language view details External link: Online copy
    Resources
    • LISREL page at UTEXAS
      LISREL is a stand-alone software product marketed by Scientific Software, International. It is designed to estimate and test Structural Equation Models (SEMs). SEMs are statistical models of linear relationships among latent (unobserved) variables and manifest (observed) variables. You can also carry out exploratory and confirmatory factor analysis, as well as path analysis, using this software.
      LISREL uses the correlations or covariances among measured variables such as survey items to estimate or infer the values of factor loadings, variances, and errors of latent (unobserved) variables. LISREL syntax prior to version 8 relied solely on the specification of the nature of eight matrices: LX, LY, TD, TE, PH, PS, GA, and BE. These matrices detail the interrelationships of the manifest variables with the latent variables in any given model. In this way it can perform factor and path analyses. Furthermore, LISREL's flexibility allows it to also estimate the relationships among latent variables with other latent variables.

      LISREL now features a new programming language called SIMPLIS, which allows the LISREL user to program in a language approximating plain English rather than explicitly specifying matrix values, as was the case in previous versions of LISREL. However, you may still use the older LISREL matrix syntax with this version.

      Scientific Software, International also produces a companion product called PRELIS. PRELIS is a data management program which is designed to read and pre-process data prior to LISREL analysis. Recent upgrades to PRELIS feature extensive data selection and analysis routines, such as allowing the user to specify the measurement level of each variable in the analysis (e.g., ORDINAL, CONTINUOUS, etc.) and diagnostic statistics such as Mardia's measure of multivariate kurtosis.
      external link
    • LISREL History
      A general overview of the history of structural equation modeling and the development of LISREL.external link