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message: 'To cite package "bifactory" in publications use:'
type: software
license: AGPL-3.0-only
title: 'bifactory: (Bifactor) ESEM with Continuous (MLR) or Ordered (WLSMV) Data'
version: 0.5.0
doi: 10.32614/CRAN.package.bifactory
abstract: Fits bifactor Exploratory Structural Equation Models (B-ESEM), together
  with standard ESEM and Confirmatory Factor Analysis (CFA), for continuous and ordered-categorical
  data. Continuous models use 'lavaan' native 'efa()' blocks (MLR). Ordered-categorical
  ESEM defaults to 'lavaan' WLSMV; ordered B-ESEM uses a custom diagonally weighted
  least squares (DWLS) path with polychoric correlations from 'psych', rotation-delta
  standard errors via 'numDeriv', and a mean- and variance-adjusted chi-square. Target,
  geomin, and oblimin rotations use 'GPArotation'; the bifactor ESEM approach follows
  Morin, Arens and Marsh (2016) <https://doi.org/10.1080/10705511.2014.961800>. Additional
  features include multi-group measurement invariance (configural through strict,
  with partial invariance), ESEM-within-CFA conversion, McDonald's omega reliability
  suite, and the Mehrvarz and Rouder (2026) <https://doi.org/10.31234/osf.io/95enc_v3>
  alignment ratio check for ICM-CFA misspecification. An optional 'MplusAutomation'
  interface allows side-by-side comparison with 'Mplus' output.
authors:
- family-names: De Beer
  given-names: Leon T.
  email: leondb@gmail.com
repository: https://leondebeer.r-universe.dev
repository-code: https://github.com/leondebeer/bifactory
commit: 2366c53ca0839ef7dfbaa143154d330f24ba5d5d
url: https://github.com/leondebeer/bifactory
date-released: '2026-06-30'
contact:
- family-names: De Beer
  given-names: Leon T.
  email: leondb@gmail.com