OpenMx 2.0: Extended Structural Equation and Statistical Modeling

Michael C. Neale*, Michael D. Hunter, Joshua N. Pritikin, Mahsa Zahery, Timothy R. Brick, Robert M. Kirkpatrick, Ryne Estabrook, Timothy C. Bates, Hermine H. Maes, Steven M. Boker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

360 Scopus citations

Abstract

The new software package OpenMx 2.0 for structural equation and other statistical modeling is introduced and its features are described. OpenMx is evolving in a modular direction and now allows a mix-and-match computational approach that separates model expectations from fit functions and optimizers. Major backend architectural improvements include a move to swappable open-source optimizers such as the newly written CSOLNP. Entire new methodologies such as item factor analysis and state space modeling have been implemented. New model expectation functions including support for the expression of models in LISREL syntax and a simplified multigroup expectation function are available. Ease-of-use improvements include helper functions to standardize model parameters and compute their Jacobian-based standard errors, access to model components through standard R $ mechanisms, and improved tab completion from within the R Graphical User Interface.

Original languageEnglish (US)
Pages (from-to)535-549
Number of pages15
JournalPsychometrika
Volume81
Issue number2
DOIs
StatePublished - Jun 1 2016

Keywords

  • behavior genetics
  • big data
  • full information maximum likelihood
  • item factor analysis
  • latent class analysis
  • mixture distribution
  • optimization
  • ordinal data
  • path analysis
  • state space modeling
  • structural equation modeling
  • substance use data analysis
  • time series

ASJC Scopus subject areas

  • Psychology(all)
  • Applied Mathematics

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