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D3mirt  

Descriptive 3D Multidimensional Item Response Theory Modelling
View on CRAN: Click here


Download and install D3mirt package within the R console
Install from CRAN:
install.packages("D3mirt")

Install from Github:
library("remotes")
install_github("cran/D3mirt")

Install by package version:
library("remotes")
install_version("D3mirt", "2.0.4")



Attach the package and use:
library("D3mirt")
Maintained by
Erik Forsberg
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2023-04-28
Latest Update: 2023-08-08
Description:
For identifying, estimating, and plotting descriptive multidimensional item response theory models, restricted to 3D and dichotomous or polytomous data that fit the two-parameter logistic model or the graded response model. The method is foremost explorative and centered around the plot function that exposes item characteristics and constructs, represented by vector arrows, located in a three-dimensional interactive space. The results can be useful for item-level analysis as well as test development.
How to cite:
Erik Forsberg (2023). D3mirt: Descriptive 3D Multidimensional Item Response Theory Modelling. R package version 2.0.4, https://cran.r-project.org/web/packages/D3mirt
Previous versions and publish date:
1.0.1 (2023-04-28 20:00), 1.0.2 (2023-05-10 18:40), 1.0.3 (2023-05-11 12:30), 1.0.4 (2023-06-12 17:40), 1.0.5 (2023-07-20 16:22), 1.1.0 (2023-08-08 10:40)
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