Celebrating 50 Years of Structural Equation Modeling with LISREL

Scientific Software Inc., a wholly-owned subsidiary of Vector Psychometric Group, LLC, has released LISREL 11 on 06/24/2021. 

The substantially upgraded new version marks the golden jubilee of a seminal development in the history of Structure Equation Modeling (SEM).  A little over a half century ago Professor Karl Jöreskog published a monograph in the Educational Testing Service (ETS) Research Bulletin series, entitled A General Method for Estimating a Linear Structural Equation System.

The technical development was supported by the availability of LISREL, which was a FORTRAN IV program for the IBM System/360.  From magnetic tape to cloud-based distribution on SSI Live™, and from a single program to a complete suite for statistical analysis with latent variables, LISREL has come to define the standard for SEM software.

To celebrate the golden jubilee of LISREL’s original release, VPG is offering a one-time discount of $50 off of all LISREL Basic, Standard and Commercial subscription licenses sold on SSI Live.  For more details, please visit SSI Live.