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GeSCA is a web-based software program for generalized structured component analysis that represents a component-based approach to structural equation modeling. This program provides a graphical user interface that allows users to easily express their model as a path diagram and to view the estimates of model parameters.

GeSCA is free of charge and capable of analyzing up to 1000 cases and 100 observed variables.

GeSCA currently enables users to:

  • use Microsoft® Excel (.xls or .xlsx) data files. new
  • conduct all single-group analyses of user-specified structural equation models.
  • use the bootstrap method to estimate the standard errors of parameter estimates.
  • specify both reflective and formative indicators.
  • impose user-defined or equality constraints on loadings and path coefficients.
  • conduct all multi-group analyses with the optional imposition of cross-group constraints.
  • deal with missing observations via three different procedures.
  • handle second-order latent variables in single-group analyses.


* Attention: Changes in the security protocols for java may adversely affect GeSCA.
Please follow these instructions to circumvent the problem.
1. When users enter GeSCA, they may see a Java popup window asking "Block potentially unsafe components from being run?",  please choose "No" to run the software.

2. Important update (November 3, 2010): We fixed a bug regarding inconsistency in scaling observed and latent variables. In the previous version, observed variables were standardized while latent variables normalized. We now normalize both observed and latent variables. This bug was unlikely to affect parameter estimates substantially in most cases, whereas it might result in less accurate FIT and AFIT values. We thank Dr. Jörg Henseler for his personal inquiries and comments that greatly facilitated detecting the scaling inconsistency.

3. Mac users can run GeSCA in both Firefox and Safari. However, when they run GeSCA in Safari, they will see the screen flicker every second. This does not affect the result of analysis.

4. Users must have Java installed to run GeSCA. If Java is not installed, a small red X will appear on the screen. You can download Java here.