g308_sirt

14,940 responses from 747 respondents to 20 items.

About this table

DescriptionData from C-tests with a testlet structure
ReferenceSchroeders, U., Robitzsch, A., & Schipolowski, S. (2014). A Comparison of Different Psychometric Approaches to Modeling Testlet Structures: An Example with C‐Tests. Journal of Educational Measurement, 51(4), 400-418.
DOI10.1111/jedm.12054
LicenceGPL-3.0
Source datahttps://cran.r-project.org/web/packages/sirt/index.html

Size and shape

Responses14,940
Respondents747
Items20
Response categories2
Responses per respondent20
Responses per item747
Density1
LongitudinalFALSE

Classification

age rangeMixed
child age (for child-focused studies)Adolescent (12-18y)
sampleEducational, Targeted/specific
construct typeCognitive/educational
measurement toolTest
item formatConstructed Response
primary language(s)ger
construct nameC-Test with Testlet Structure (g308 SIRT Dataset)

Codebook

This codebook is reconstructed by the IRW from the IRW data standard and the script that built it, sirt.R. It is our best reading, not the source’s own codebook, and it may contain mistakes. Where the two disagree, the source data are the authority. If you find an error, please tell us.

ColumnWhat it isSource column
IRW standard columns
idIRW standard Identifier for the focal unit being measured — typically a person, but sometimes another entity (e.g., a word in a lexical task).made in the build script
itemIRW standard Item identifier.made in the build script
item_familyIRW standard Groups items that may violate local independence — testlets, clones, or clusters of similar items.not traced
respIRW standard Response value.made in the build script

What item codes and covariate values stand for is in the package’s documentation, sirt::data.g308.

Get the data

Download CSVno account neededBrowse on Redivisexplore and queryCroissant metadataHugging Face, Kaggle, OpenML

Or load it directly in R or Python (both need a free Redivis account; the first call opens a browser to sign in):

# R
install.packages("remotes")
remotes::install_github("itemresponsewarehouse/Rpkg")
library(irw)
df <- irw_fetch("g308_sirt")
# Python
pip install irw

import irw
df = irw.fetch("g308_sirt")

How to cite

@article{Schroeders_2014, title={A Comparison of Different Psychometric Approaches to Modeling Testlet Structures: An Example with C‐Tests}, volume={51}, ISSN={1745-3984}, url={http://dx.doi.org/10.1111/jedm.12054}, DOI={10.1111/jedm.12054}, number={4}, journal={Journal of Educational Measurement}, publisher={Wiley}, author={Schroeders, Ulrich and Robitzsch, Alexander and Schipolowski, Stefan}, year={2014}, month=dec, pages={400–418} }

Version and provenance

IRW versionv566
Redivis datasetitem_response_warehouse v70.0
Redivis dataset DOI10.57761/4qxs-pq87
Manifest pin for this IRW versionv70.0
Metadata sourceirw_meta v43.0