trog {mokken} | R Documentation |
trog Data
Description
A clustered-item dataset with scores of 210 children (measurement taken at a first time point of a larger developmental study; Brinchmann et al., 2019) that took the Norwegian adaptation of the Test for Reception of Grammar (TROG; Bishop, 1979). The TROG consists of C=20 clusters of Jc=4 dichotomously scored items for all c. and all kids were administered each of the J=80 items. This item set is used as a real data example to demonstrate how to investigate the ordering structure of a test in Koopman & Braeken (2024).
Usage
data(autonomySupport)
Format
A 210 by 80 data frame containing dichotomous data. Each column reflects an item, each row a respondent.
The column labels reflect the cluster (letters) and item within the cluster (numbers). For example,
item a1 is the first item in cluster a, see colnames(trog)
.
Details
Each item is dichotomously scored, where 1 reflects a correct response and 0 an incorrect response.
References
Bishop, D. V. M. (1979). Comprehension in developmental language disorders. Developmental Medicine & Child Neurology, 21(2), 225-238. doi:10.1111/j.1469-8749.1979.tb01605.x.
Brinchmann, E. I., Braeken, J., & Lyster, S.-A. H. (2019). Is there a direct relation between the development of vocabulary and grammar? Developmental Science, 22(1), 1-13. doi:10.1111/desc.12709.
Koopman, L. & Braeken, J. (2024). Investigating the Ordering Structure of Clustered Items Using Nonparametric Item Response Theory. Manuscript submitted for publication.
See Also
Examples
data(trog)