104 0

A Note on the Reliability Coefficients for Item Response Model-Based Ability Estimates

Title
A Note on the Reliability Coefficients for Item Response Model-Based Ability Estimates
Author
김성훈
Keywords
reliability coefficient; ability estimates; item response theory
Issue Date
2012-01
Publisher
SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Citation
PSYCHOMETRIKA, 권: 77, 호: 1, 페이지: 153-162
Abstract
Assuming item parameters on a test are known constants, the reliability coefficient for item response theory (IRT) ability estimates is defined for a population of examinees in two different ways: as (a) the product-moment correlation between ability estimates on two parallel forms of a test and (b) the squared correlation between the true abilities and estimates. Due to the bias of IRT ability estimates, the parallel-forms reliability coefficient is not generally equal to the squared-correlation reliability coefficient. It is shown algebraically that the parallel-forms reliability coefficient is expected to be greater than the squared-correlation reliability coefficient, but the difference would be negligible in a practical sense.
URI
http://search.proquest.com/docview/912432852?accountid=11283https://link.springer.com/article/10.1007%2Fs11336-011-9238-0
ISSN
0033-3123
DOI
10.1007/s11336-011-9238-0
Appears in Collections:
COLLEGE OF EDUCATION[S](사범대학) > EDUCATION(교육학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE