Package: lcsm
Type: Package
Title: Univariate and Bivariate Latent Change Score Modelling
Date: 2026-07-28
Version: 0.3.3
Authors@R: c(
  person("Milan", "Wiedemann", email = "milan.wiedemann@gmail.com", role = c("aut", "cre"), comment = c(ORCID = "0000-0003-1991-282X")),
  person("Graham M", "Thew", role = "ctb", comment = c(ORCID = "0000-0003-2851-1315")),
  person("Urška", "Košir", role = "ctb", comment = c(ORCID = "0000-0003-2132-4090")),
  person("Anke", "Ehlers", role = c("ths"), comment = c(ORCID = "0000-0002-8742-0192")),
  person("Mental Health Research UK", role = c("fnd"))
  )
Description: Helper functions to implement univariate and bivariate
        latent change score models in R using the 'lavaan' package. For
        details about Latent Change Score Modeling (LCSM) see McArdle
        (2009) <doi:10.1146/annurev.psych.60.110707.163612> and Grimm,
        An, McArdle, Zonderman and Resnick (2012)
        <doi:10.1080/10705511.2012.659627>. The package automatically
        generates 'lavaan' syntax for different model specifications
        and varying timepoints. The 'lavaan' syntax generated by this
        package can be returned and further specifications can be added
        manually. Longitudinal plots as well as simplified path
        diagrams can be created to visualise data and model
        specifications. Estimated model parameters and fit statistics
        can be extracted as data frames. Data for different univariate
        and bivariate LCSM can be simulated by specifying estimates for
        model parameters to explore their effects. This package
        combines the strengths of other R packages like 'lavaan',
        'broom', and 'semPlot' by generating 'lavaan' syntax that helps
        these packages work together.
Depends: R (>= 3.5.0)
License: MIT + file LICENSE
Encoding: UTF-8
URL: https://milanwiedemann.github.io/lcsm/
BugReports: https://github.com/milanwiedemann/lcsm/issues
LazyData: true
Imports: lavaan (>= 0.6.2), dplyr (>= 0.7.4), tibble (>= 1.4.2),
        magrittr (>= 1.5), rlang (>= 0.1.6), tidyr (>= 0.8.0), ggplot2
        (>= 2.2.1), broom (>= 0.5.1), semPlot (>= 1.1), stats (>=
        3.5.2), stringr (>= 1.4.0), purrr (>= 0.3.4)
Roxygen: list(markdown = TRUE)
Suggests: testthat (>= 3.0.0), knitr (>= 1.22), rmarkdown (>= 1.12),
        shiny (>= 1.4.0)
VignetteBuilder: knitr
Config/testthat/edition: 3
Config/roxygen2/version: 8.0.0
Config/pak/sysreqs: cmake libglpk-dev make libicu-dev libjpeg-dev
        libpng-dev libuv1-dev libxml2-dev
Repository: https://milanwiedemann.r-universe.dev
Date/Publication: 2026-07-28 16:08:22 UTC
RemoteUrl: https://github.com/milanwiedemann/lcsm
RemoteRef: HEAD
RemoteSha: 137d3b3f4100031930d6d4b11c07e70ab22b1daa
NeedsCompilation: no
Packaged: 2026-09-26 09:42:16 UTC; root
Author: Milan Wiedemann [aut, cre] (ORCID:
    <https://orcid.org/0000-0003-1991-282X>),
  Graham M Thew [ctb] (ORCID: <https://orcid.org/0000-0003-2851-1315>),
  Urška Košir [ctb] (ORCID: <https://orcid.org/0000-0003-2132-4090>),
  Anke Ehlers [ths] (ORCID: <https://orcid.org/0000-0002-8742-0192>),
  Mental Health Research UK [fnd]
Maintainer: Milan Wiedemann <milan.wiedemann@gmail.com>