Package: mlmoderator
Type: Package
Title: Probing, Plotting, and Interpreting Multilevel Interaction
        Effects
Version: 0.2.1
Authors@R: 
    person(
      given   = "Subir",
      family  = "Hait",
      role    = c("aut", "cre"),
      email   = "haitsubi@msu.edu",
      comment = c(ORCID = "0009-0004-9871-9677")
    )
Description: Provides a unified workflow for probing, plotting, and
        assessing the robustness of cross-level interaction effects in
        two-level mixed-effects models fitted with 'lme4' (Bates et
        al., 2015) <doi:10.18637/jss.v067.i01>. Implements simple
        slopes analysis following Aiken and West (1991,
        ISBN:9780761907121), Johnson-Neyman intervals following Johnson
        and Fay (1950) <doi:10.1007/BF02288864> and Bauer and Curran
        (2005) <doi:10.1207/s15327906mbr4003_5>, and grand- or
        group-mean centering as described in Enders and Tofighi (2007)
        <doi:10.1037/1082-989X.12.2.121>. Includes a slope variance
        decomposition that separates fixed-effect uncertainty from
        random-slope variance (tau11), a contour surface plot of
        predicted outcomes over the full predictor-by-moderator space,
        and robustness diagnostics comprising intraclass correlation
        coefficient shift analysis and leave-one-cluster-out (LOCO)
        stability checks. Designed for researchers in education,
        psychology, biostatistics, epidemiology, organizational
        science, and other fields where outcomes are clustered within
        higher-level units.
License: MIT + file LICENSE
Encoding: UTF-8
Language: en-US
LazyData: true
Roxygen: list(markdown = TRUE)
RoxygenNote: 7.3.3
Depends: R (>= 4.1.0)
Imports: lme4, ggplot2, stats, utils, grDevices, rlang
Suggests: testthat (>= 3.0.0), dplyr, tibble, knitr, rmarkdown,
        patchwork
Config/testthat/edition: 3
VignetteBuilder: knitr
URL: https://github.com/causalfragility-lab/mlmoderator
BugReports: https://github.com/causalfragility-lab/mlmoderator/issues
Config/pak/sysreqs: cmake make
Repository: https://causalfragility-lab.r-universe.dev
Date/Publication: 2026-04-03 22:46:26 UTC
RemoteUrl: https://github.com/causalfragility-lab/mlmoderator
RemoteRef: HEAD
RemoteSha: d082a04529e0b078cc29fb635e8ce5f749b9a3a4
NeedsCompilation: no
Packaged: 2026-07-02 07:41:17 UTC; root
Author: Subir Hait [aut, cre] (ORCID: <https://orcid.org/0009-0004-9871-9677>)
Maintainer: Subir Hait <haitsubi@msu.edu>