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bifactory 0.5.2

This release contains defensive fixes; estimation results are unchanged.

• parameters() on a Heywood-corrected ESEM fit now reports NA for standard errors, z-values, and p-values when the rotation changed after those quantities were computed, while retaining the corrected standardized loadings.
• Reliability calculations floor residual variances at 1e-6, preventing a Heywood case from producing a negative residual variance and corrupting the H index.
• factor_scores() now raises an informative error when the polychoric correlation or score-information matrix is singular, instead of exposing a bare solve() failure.
• Heywood retries now recognize the NA/0 target convention, so primary cells in targets built that way are freed correctly.
• B-ESEM sign correction now follows the target column order before orienting loadings, rather than assuming that the general factor is the first column.
• factor_scores() now warns when one pooled polychoric matrix is applied across multiple groups.
• esem_ordered() and besem_ordered() now stop with a clear message when supplied item names collide case-insensitively, instead of silently mismatching them.
• The ECV index now returns NA rather than NaN for a degenerate all-zero loading matrix.
• The RMSEA confidence-interval upper bound retries with a wider bracket only when the original search fails, leaving previously published values unchanged when the original search succeeds.

bifactory 0.5.1

Changes in response to CRAN review (no changes to estimation results):

• DESCRIPTION: all acronyms are now spelled out on first use (WLSMV, MLR, DWLS, ICM-CFA); removed quotes around efa().
• Console output outside print()/summary() methods now uses message() (or warning() where appropriate) instead of cat()/print(), so it can be suppressed with suppressMessages(). Progress output keeps its verbose gating.
• parameters() now returns a classed data frame (bifactory_parameters) that prints the same formatted table via its own print() method. Assigning the result no longer prints as a side effect.
• Random-number state is no longer saved to and restored from .GlobalEnv; internal fixed-seed sections use withr::with_seed() (new Import: withr). Draws are unchanged, so results are identical to 0.5.0.
• Examples rewritten to be self-contained and executable (lavaan::HolzingerSwineford1939); \dontrun{} is retained only for examples that require a licensed Mplus installation or open an interactive editor. Longer-running examples use \donttest{}. No runnable example uses a package from Suggests.

bifactory 0.5.0

• Initial CRAN submission.

Features

• Bifactor ESEM (B-ESEM), standard ESEM, and CFA for continuous and ordered-categorical data.
• Continuous models via ‘lavaan’ native efa() blocks (MLR).
• Ordered-categorical ESEM via ‘lavaan’ WLSMV; ordered B-ESEM via a custom diagonally weighted least squares (DWLS) path with polychoric correlations from ‘psych’, rotation-delta standard errors via ‘numDeriv’, and mean-and-variance-adjusted chi-square.
• Target, geomin, and oblimin rotations via ‘GPArotation’; the bifactor ESEM approach follows Morin, Arens and Marsh (2016).
• 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) alignment-ratio check for ICM-CFA misspecification.
• Optional side-by-side comparison with Mplus output via ‘MplusAutomation’.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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