sirt

Supplementary Item Response Theory Models

CRAN Package

Supplementary functions for item response models aiming to complement existing R packages. The functionality includes among others multidimensional compensatory and noncompensatory IRT models (Reckase, 2009, doi:10.1007/978-0-387-89976-3), MCMC for hierarchical IRT models and testlet models (Fox, 2010, doi:10.1007/978-1-4419-0742-4), NOHARM (McDonald, 1982, doi:10.1177/014662168200600402), Rasch copula model (Braeken, 2011, doi:10.1007/s11336-010-9190-4; Schroeders, Robitzsch & Schipolowski, 2014, doi:10.1111/jedm.12054), faceted and hierarchical rater models (DeCarlo, Kim & Johnson, 2011, doi:10.1111/j.1745-3984.2011.00143.x), ordinal IRT model (ISOP; Scheiblechner, 1995, doi:10.1007/BF02301417), DETECT statistic (Stout, Habing, Douglas & Kim, 1996, doi:10.1177/014662169602000403), local structural equation modeling (LSEM; Hildebrandt, Luedtke, Robitzsch, Sommer & Wilhelm, 2016, doi:10.1080/00273171.2016.1142856).


Documentation


Team


Insights

Last 30 days

This package has been downloaded 3,690 times in the last 30 days. That's enough downloads to impress a room full of undergrads. A commendable achievement indeed. The following heatmap shows the distribution of downloads per day. Yesterday, it was downloaded 132 times.

Sun
Mon
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Thu
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Sat
0 downloadsMar 2, 2025
0 downloadsMar 3, 2025
0 downloadsMar 4, 2025
189 downloadsMar 5, 2025
136 downloadsMar 6, 2025
132 downloadsMar 7, 2025
31 downloadsMar 8, 2025
29 downloadsMar 9, 2025
195 downloadsMar 10, 2025
208 downloadsMar 11, 2025
108 downloadsMar 12, 2025
98 downloadsMar 13, 2025
243 downloadsMar 14, 2025
138 downloadsMar 15, 2025
37 downloadsMar 16, 2025
74 downloadsMar 17, 2025
146 downloadsMar 18, 2025
164 downloadsMar 19, 2025
155 downloadsMar 20, 2025
80 downloadsMar 21, 2025
21 downloadsMar 22, 2025
36 downloadsMar 23, 2025
102 downloadsMar 24, 2025
127 downloadsMar 25, 2025
232 downloadsMar 26, 2025
152 downloadsMar 27, 2025
192 downloadsMar 28, 2025
27 downloadsMar 29, 2025
105 downloadsMar 30, 2025
131 downloadsMar 31, 2025
217 downloadsApr 1, 2025
53 downloadsApr 2, 2025
132 downloadsApr 3, 2025
0 downloadsApr 4, 2025
0 downloadsApr 5, 2025
21
243

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Last 365 days

This package has been downloaded 32,903 times in the last 365 days. The academic equivalent of having a dedicated subreddit. There are fans, and maybe even a few trolls! The day with the most downloads was Feb 11, 2025 with 408 downloads.

The following line graph shows the downloads per day. You can hover over the graph to see the exact number of downloads per day.

Data provided by CRAN


Binaries


Dependencies

  • Imports4 packages
  • Suggests17 packages
  • Linking To3 packages
  • Reverse Depends1 package
  • Reverse Imports8 packages
  • Reverse Suggests6 packages
  • Reverse Enhances1 package