data.ess2005

This dataset contains item loadings $\lambda$ and intercepts $\nu$
for 26 countries for the European Social Survey (ESS 2005;
see Asparouhov &amp; Muthen, 2014).

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>).

Alexander Robitzsch

sirt

Supplementary Item Response Theory Models

data.ess2005 function

The format of the dataset is:
<code>List of 2</code> 
<code> $ lambda: num [1:26, 1:4] 0.688 0.721 0.72 0.687 0.625 ...</code> 
<code> ..- attr(*, "dimnames")=List of 2</code> 
<code> .. ..$ : NULL</code> 
<code> .. ..$ : chr [1:4] "ipfrule" "ipmodst" "ipbhprp" "imptrad"</code> 
<code> $ nu : num [1:26, 1:4] 3.26 2.52 3.41 2.84 2.79 ...</code> 
<code> ..- attr(*, "dimnames")=List of 2</code> 
<code> .. ..$ : NULL</code> 
<code> .. ..$ : chr [1:4] "ipfrule" "ipmodst" "ipbhprp" "imptrad"</code>

Format

Dataset European Social Survey 2005 — data.ess2005

The format of the dataset is:
<code>List of 2</code> 
<code> $ lambda: num [1:26, 1:4] 0.688 0.721 0.72 0.687 0.625 ...</code> 
<code> ..- attr(*, "dimnames")=List of 2</code> 
<code> .. ..$ : NULL</code> 
<code> .. ..$ : chr [1:4] "ipfrule" "ipmodst" "ipbhprp" "imptrad"</code> 
<code> $ nu : num [1:26, 1:4] 3.26 2.52 3.41 2.84 2.79 ...</code> 
<code> ..- attr(*, "dimnames")=List of 2</code> 
<code> .. ..$ : NULL</code> 
<code> .. ..$ : chr [1:4] "ipfrule" "ipmodst" "ipbhprp" "imptrad"</code>

data.ess2005: Dataset European Social Survey 2005

Description

Usage

Arguments

Format

References