In this paper we review the current state of R packages for Item Response Theory (IRT).
We group the available packages based on their purpose and provide an overview of each
package's main functionality. Each of the packages we describe has a peer-reviewed publication
associated with it. We also provide a tutorial analysis of data from the 1990
Workplace Industrial Relation Survey to show how the breadth and
exibility of IRT
packages in R can be leveraged to conduct even challenging item analyses with versatility
and ease. These items relate to the type of consultations that are carried out in a firm
when major changes are implemented. We first use unidimensional IRT models just to
discover that they fit do not fit well. We then use nonparametric IRT to explore the
possible causes for the scaling problem. Based on the results from the exploration, we
finally use a two-dimensional model on a subset of the original items to achieve a good
fit with a sensible interpretation, namely that there are two types of consultations a firm
may engage in: consultations with workers/representatives from the firm and with official
union representatives. The different items relate mostly to one of these dimensions and
firms can be scaled well along these two dimensions. / Series: Discussion Paper Series / Center for Empirical Research Methods
| Identifer | oai:union.ndltd.org:VIENNA/oai:epub.wu-wien.ac.at:4010 |
| Date | 11 1900 |
| Creators | Rusch, Thomas, Mair, Patrick, Hatzinger, Reinhold |
| Publisher | WU Vienna University of Economics and Business |
| Source Sets | Wirtschaftsuniversität Wien |
| Language | English |
| Detected Language | English |
| Type | Paper, NonPeerReviewed |
| Format | application/pdf |
| Relation | http://wu.ac.at/methods, http://epub.wu.ac.at/4010/ |
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