SNSequate-package: Standard and Nonstandard Statistical Models and Methods for Test
Equating
Description
The package contains functions to perform various models and
methods for test equating. It currently implements the traditional
mean, linear and equipercentile equating methods, as well as the
mean-mean, mean-sigma, Haebara and Stocking-Lord IRT linking methods.
It also supports newest methods such that local equating, kernel
equating (using Gaussian, logistic and uniform kernels), and IRT
parameterlinking methods based on asymmetric item characteristic
functions. Functions to obtain both standard error of equating (SEE)
and standard error of equating difference between two equating
functions (SEED) are also implmented for the kernel method of
equating.Details
ll{
Package: SNSequate
Type: Package
Version: 1.1-1
Date: 2014-08-08
License: GPL (>= 2)
}References
Estay, G. (2012). Characteristic Curves Scale Transformation Methods Using
Asymmetric ICCs for IRT Equating. Unpublished MSc. Thesis. Pontificia Universidad
Catolica de Chile.
Gonzalez, J. (2013). Statistical Models and Inference for the True Equating Transformation in the
Context of Local Equating. Journal of Educational Measurement, 50(3), 315-320.
Gonzalez, J. (2014). SNSequate: Standard and Nonstandard Statistical Models and Methods for Test
Equating. Journal of Statistical Software, 59(7), 1-30.
Holland, P. and Thayer, D. (1989). The kernel method of equating score distributions.
(Technical Report No 89-84). Princeton, NJ: Educational Testing Service.
Holland, P., King, B. and Thayer, D. (1989). The standard error of equating for the kernel method
of equating score distributions (Tech. Rep. No. 89-83). Princeton, NJ: Educational Testing Service.
Kolen, M., and Brennan, R. (2004). Test Equating, Scaling and Linking.
New York, NY: Springer-Verlag.
Lord, F. (1980). Applications of Item Response Theory to Practical Testing Problems.
Lawrence Erlbaum Associates, Hillsdale, NJ.
Lord, F. and Wingersky, M. (1984). Comparison of IRT True-Score and Equipercentile Observed-Score Equatings.
Applied Psychological Measurement,8(4), 453--461.
van der Linden, W. (2011). Local Observed-Score Equating. In A. von Davier (Ed.)
Statistical Models for Test Equating, Scaling, and Linking. New York, NY: Springer-Verlag.
van der Linden, W. (2013). Some Conceptual Issues in Observed-Score Equating.
Journal of Educational Measurement, 50(3), 249-285.
Von Davier, A., Holland, P., and Thayer, D. (2004). The Kernel Method of Test Equating.
New York, NY: Springer-Verlag.