(LInear Structural RELations) is a professional statistical software package primarily used for Structural Equation Modeling (SEM) . It allows researchers to analyze complex relationships between observed variables and latent (unobservable) constructs. Core Features of LISREL

Combines factor analysis and multiple regression to test theoretical models.

Handles diverse models, including non-recursive models, multilevel linear and non-linear modeling, and multiple group comparisons.

Includes a pre-processor for data screening, handling missing values, and transforming data (e.g., computing polychoric correlations).

Users can define models using formal matrix notation, the simplified SIMPLIS command language, or a graphical path-diagram interface.