Scale Shrinkage in Vertical Equating

The impact of differential discrimination on vertical equating

This paper shows the impact of differential discrimination on the results of vertical equating when the Rasch model is applied. It is shown that where there is differential discrimination, relevant items contribute information, for the purpose of vertical equating, that contains systematic error. The impact of differential item discrimination on vertical equating is examined from a theoretical ...

Rasch simultaneous vertical equating for measuring reading growth.

The longitudinal measurement of ability growth requires that the measures that are taken at the various time points be obtained using the same yardstick. Tests given for this purpose, therefore, need to be equated. The popular practice still in use for the purpose of equating tests, is the grade-equivalent. This paper compares the observation of children's growth in reading using grade-equivale...

Estimating Equating Error in Observed-Score Equating

DOCUMENT RESUME

Adaptive Bayesian Shrinkage Estimation Using Log-Scale Shrinkage Priors

Global-local shrinkage hierarchies are an important, recent innovation in Bayesian estimation of regression models. In this paper we propose to use log-scale distributions as a basis for generating familes of flexible prior distributions for the local shrinkage hyperparameters within such hierarchies. An important property of the log-scale priors is that by varying the scale parameter one may v...

11. Equating