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cTMed

ANALYTICS
Velocity2.5

R package cTMed by jeksterslab — release notes from GitHub.

github.com/jeksterslab/cTMed ↗

Continuous-time mediation effects get standardized centrality, six years into steady patch work

mediation-analysiscontinuous-time-modelsr-packagestatistical-methodscran
◆Current state
cTMed computes direct, indirect and total effects for continuous-time mediation models, with delta-method, Monte Carlo and bootstrap variants of each. Development is a long run of patch releases from the jeksterslab account, roughly every two months, each adding a function or two. The latest adds standardized centrality measures and allows a diagonal sigma across ten standardized estimators.
◆Where it's heading
The package is filling out a matrix rather than changing shape: for each effect type there is a delta-method, a Monte Carlo and a bootstrap path, and each release closes another cell. The 2025 releases were largely externally forced — an Armadillo 15.0.x transition at CRAN, a citation addition after the Psychological Methods paper landed — which suggests the statistical core has been settled since the 1.0.6 standardization revision.
◆Prediction
The diagonal-sigma option has now reached the standardized estimators; extending it to the remaining unstandardized variants is the obvious next cell to fill.

◆Recent moves

  1. 26d ago

    Standardized centrality measures and diagonal-sigma support

    Standardized centrality measures join the estimator set, and diagonal sigma is now accepted across ten standardized functions covering delta-method and Monte Carlo paths. This is the matrix-filling pattern the package has followed since 1.0.0.

    View source ↗
  2. 6mo ago

    Minor method edits

    Minor edits to methods, with no detail given in the release note.

    View source ↗
  3. 10mo ago

    Package citation added for the Psychological Methods paper

    Adds the Pesigan, Russell and Chow (2025) Psychological Methods paper as the package citation. Metadata only — the methods it describes were already implemented.

    View source ↗
  4. 10mo ago

    Armadillo 15.0.x compatibility for CRAN

    A compatibility release for CRAN's Armadillo 15.0.x transition. Externally forced, with no change to what the package computes.

    View source ↗
  5. 1y ago

    Standardization reworked around the steady-state covariance matrix

    The standardization method is revised to use the steady-state covariance matrix. This changes the numbers standardized estimators return, which makes it the most consequential release in the window despite the patch label.

    View source ↗
  6. 1y ago

    Bootstrap centrality estimators and MCPhiSigma()

    MCPhiSigma() lands alongside bootstrap variants of the indirect and total centrality estimators, continuing to pair each effect measure with delta-method, Monte Carlo and bootstrap paths.

    View source ↗