Description Details Author(s) References
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.
Package: | SNSequate |
Type: | Package |
Version: | 1.1-1 |
Date: | 2014-08-08 |
License: | GPL (>= 2) |
Jorge Gonzalez Burgos
Maintainer: Jorge Gonzalez Burgos <jgonzale@mat.puc.cl>
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 Unpublished MSc.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.
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