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Comparison of Traditional and Latent Trait Theory Methods for Equating Tests [microform] / Michael J. Kolen
Bib ID 5386971
Format BookBook, MicroformMicroform, OnlineOnline
Author
Kolen, Michael J
 
Online Versions
Description [Washington, D.C.] : Distributed by ERIC Clearinghouse, 1980 
24 p. 
Summary

Results from equipercentile, linear, and latent trait equating of the vocabulary and quantitative thinking tests of the Iowa Tests of Educational Development were compared. The study entailed both the equating of forms (of similar difficulty) and the equating of levels (of differing difficulty). The goal was to equate seventh edition tests to those of the sixth edition. The data were item responses from a representative sample of 10,728 Iowa high school students. One-, two-, and three-parameter logistic latent trait methods were used. The results from the equating methods were compared using a cross-validation criterion which measured the closeness of converted score distributions to actual score distributions for randomly equivalent groups. The one-parameter methods results were judged inadequate for equating tests differing in difficulty, possibly because of prevalent examinee guessing. The three-parameter methods results were promising although two problems were discussed which require further study. Presently, equipercentile procedures may be the most viable for equating tests of differing difficulty. (Author/CP)

Notes

ERIC Note: Paper presented at the Annual Meeting of the American Educational Research Association (64th, Boston, MA, April 7-11, 1980).

Educational level discussed: High Schools.

May also be available online. Address as at 14/8/18: https://eric.ed.gov/

Reproduction Microfiche. [Washington D.C.]: ERIC Clearinghouse microfiches : positive. 
Subjects Achievement Tests.  |  Difficulty Level.  |  Equated Scores.  |  Guessing (Tests)  |  High Schools.  |  Latent Trait Theory.  |  Quantitative Tests.  |  Test Items.  |  True Scores.  |  Vocabulary Skills.  |  Iowa Tests of Educational Development  |  Equipercentile Equating Linear Equating Method
Form/genre Speeches/Meeting Papers.  |  Reports, Research.
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