Package: idmact 1.0.1.9000

Mackson Ncube

idmact: Interpreting Differences Between Mean ACT Scores

Interpreting the differences between mean scale scores across various forms of an assessment can be challenging. This difficulty arises from different mappings between raw scores and scale scores, complex mathematical relationships, adjustments based on judgmental procedures, and diverse equating functions applied to different assessment forms. An alternative method involves running simulations to explore the effect of incrementing raw scores on mean scale scores. The 'idmact' package provides an implementation of this approach based on the algorithm detailed in Schiel (1998) <https://www.act.org/content/dam/act/unsecured/documents/ACT_RR98-01.pdf> which was developed to help interpret differences between mean scale scores on the American College Testing (ACT) assessment. The function idmact_subj() within the package offers a framework for running simulations on subject-level scores. In contrast, the idmact_comp() function provides a framework for conducting simulations on composite scores.

Authors:Mackson Ncube [aut, cre, cph]

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idmact.pdf |idmact.html
idmact/json (API)
NEWS

# Install 'idmact' in R:
install.packages('idmact', repos = c('https://mncube.r-universe.dev', 'https://cloud.r-project.org'))

Peer review:

Bug tracker:https://github.com/mncube/idmact/issues

On CRAN:

assessmentmeasurementpsychometricsscale

3.70 score 4 scripts 152 downloads 6 exports 1 dependencies

Last updated 2 years agofrom:d80b08cf9f. Checks:OK: 7. Indexed: yes.

TargetResultDate
Doc / VignettesOKNov 09 2024
R-4.5-winOKNov 09 2024
R-4.5-linuxOKNov 09 2024
R-4.4-winOKNov 09 2024
R-4.4-macOKNov 09 2024
R-4.3-winOKNov 09 2024
R-4.3-macOKNov 09 2024

Exports:adjust_raw_scoresidmact_compidmact_subjmap_elongatemap_elongate_dfmap_scores

Dependencies:rlang

Additional-Workflows

Rendered fromAdditional-Workflows.Rmdusingknitr::rmarkdownon Nov 09 2024.

Last update: 2023-05-15
Started: 2023-05-10