Cutting edge software. Empowering research since 1971.
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For more than 3 decades, HLM has defined the practice in modeling hierarchical data.
LISREL is the progenitor of structural equation modeling, since 1976.
BILOG-MG and PARSCALE have enabled IRT applications in educational measurement.
SuperMix offers advanced linear and nonlinear mixed effects modeling for biostatistics.
Fast, comprehensive analysis of longitudinal human growth data with Auxal.