Examination for the Certificate of Proficiency in English (ECPE) data (the grammar section) has been used in Henson and Templin (2007), Templin and Hoffman (2013), Feng, Habing, and Huebner (2014), and Templin and Bradshaw (2014), among others.
A list of responses and Q-matrix with components:
Responses of 2922 examinees to 28 items.
The 28 \times 3 Q-matrix.
The data consists of responses of 2922 examinees to 28 items involving 3 attributes. Attribute 1 is morphosyntactic rules, Attribute 2 is cohesive rules and Attribute 3 is lexical rules.
Feng, Y., Habing, B. T., & Huebner, A. (2014). Parameter estimation of the reduced RUM using the EM algorithm. Applied Psychological Measurement, 38, 137-150.
Henson, R. A., & Templin, J. (2007, April). Large-scale language assessment using cognitive diagnosis models. Paper presented at the annual meeting of the National Council for Measurement in Education in Chicago, Illinois.
Templin, J., & Bradshaw, L. (2014). Hierarchical diagnostic classification models: A family of models for estimating and testing attribute hierarchies. Psychometrika, 79, 317-339.
Templin, J., & Hoffman, L. (2013). Obtaining diagnostic classification model estimates using Mplus. Educational Measurement: Issues and Practice, 32, 37-50.
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## Not run: mod1 <- GDINA(ecpe$dat,ecpe$Q) mod1 summary(mod1) mod2 <- GDINA(ecpe$dat,ecpe$Q,model="RRUM") mod2 anova(mod1,mod2) # You may compare the following results with Feng, Habing, and Huebner (2014) coef(mod2,"rrum") # G-DINA with hierarchical structure # see Templin & Bradshaw, 2014 ast <- att.structure(list(c(3,2),c(2,1)),K=3) est.gdina2 <- GDINA(ecpe$dat,ecpe$Q,model = "GDINA", control = list(conv.crit = 1e-6), att.str = list(c(3,2),c(2,1))) # see Table 7 in Templin & Bradshaw, 2014 summary(est.gdina2) ## End(Not run)
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