|
A COMPARISON OF SOME MODELS IN IRT
Yu Jiayuan Department of Education, Nanjing Normal University
1990, 22 (1):
32-36.
The Logistic, Normal Ogi ve, ARCTG, COS and LINEAR models in
IRT have been compared by Monte Carlo Simulation approach. The result
shows that the accuracies of parameter estimation of Logistic, Normal
Ogive and ARCTG models are nearly equal; The accuracy of COS model
is lower than the above three models; and, for the LINEAR Model, the
accuracy is much lower than other four models in estimating item discri-
mination than the other four models and is close to them in estimating
item difficulty and examinees' ability.
Related Articles |
Metrics
|