modelscompete4 - Compare Nested and Non-Nested Structural Equation Models

A comprehensive package for comparing multiple Structural Equation Models (SEM). Supports both nested and non-nested model comparisons, chi-square difference tests, and extraction of multiple fit indices including AIC, BIC, CFI, TLI, RMSEA, and SRMR. Built on top of the lavaan package for seamless SEM model comparison workflows.