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catR  

Generation of IRT Response Patterns under Computerized Adaptive Testing
View on CRAN: Click here


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

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

Install by package version:
library("remotes")
install_version("catR", "3.17")



Attach the package and use:
library("catR")
Maintained by
Cheng Hua
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2010-06-14
Latest Update: 2022-06-24
Description:
Provides routines for the generation of response patterns under unidimensional dichotomous and polytomous computerized adaptive testing (CAT) framework. It holds many standard functions to estimate ability, select the first item(s) to administer and optimally select the next item, as well as several stopping rules. Options to control for item exposure and content balancing are also available (Magis and Barrada (2017) ).
How to cite:
Cheng Hua (2010). catR: Generation of IRT Response Patterns under Computerized Adaptive Testing. R package version 3.17, https://cran.r-project.org/web/packages/catR. Accessed 26 Jun. 2026.
Previous versions and publish date:
1.0 (2010-06-14 08:55), 1.1 (2010-08-27 15:31), 1.2 (2010-09-07 10:50), 1.3 (2010-10-08 17:30), 1.4 (2010-10-17 18:41), 1.6 (2011-04-11 17:24), 2.0 (2011-10-23 12:09), 2.1 (2011-12-05 19:56), 2.2 (2012-03-16 11:04), 2.3 (2012-05-09 14:34), 2.4 (2013-01-17 22:35), 2.5 (2013-02-07 13:59), 2.6 (2013-12-03 13:27), 3.0 (2014-04-25 17:55), 3.1 (2014-06-04 16:10), 3.2 (2014-09-10 11:38), 3.3 (2014-11-26 18:33), 3.4 (2015-01-06 15:27), 3.5 (2015-09-27 21:16), 3.6 (2016-01-02 23:16), 3.7 (2016-05-09 17:52), 3.8 (2016-06-10 12:37), 3.9 (2016-07-15 17:12), 3.10 (2016-08-26 15:49), 3.11 (2016-11-16 08:16), 3.12 (2017-01-08 12:02), 3.13 (2017-08-31 14:40), 3.14 (2018-05-29 19:22), 3.15 (2018-06-12 15:33), 3.16 (2018-07-28 16:40)
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