Standard Errors and Confidence Intervals From Bootstrapping for Ramsay-Curve Item Response Theory Model Item Parameters

2011 ◽  
Vol 35 (7) ◽  
pp. 562-565 ◽  
Author(s):  
Fei Gu ◽  
William P. Skorupski ◽  
Larry Hoyle ◽  
Neal M. Kingston
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Confidence Intervals ◽  
Theory Model ◽  
Item Response Theory Model ◽  
Standard Errors ◽  
Response Theory ◽  
Item Parameters

Item Response Theory True Score Equatings and Their Standard Errors

2001 ◽  
Vol 26 (1) ◽  
pp. 31-50 ◽  
Author(s):  
Haruhiko Ogasawara
Keyword(s):  
Item Response Theory ◽  
Item Response ◽  
Standard Errors ◽  
Simultaneous Estimation ◽  
True Score ◽  
Response Theory ◽  
Asymptotic Standard Errors ◽  
Item Parameters ◽  
Irt Equating ◽  
Equating Coefficients

The asymptotic standard errors of the estimates of the equated scores by several types of item response theory (IRT) true score equatings are provided. The first group of equatings do not use IRT equating coefficients. The second group of equatings use the IRT equating coefficients given by the moment or characteristic curve methods. The equating designs considered in this article cover those with internal or external common items and the methods with separate or simultaneous estimation of item parameters of associated tests. For the estimates of the asymptotic standard errors of the equated true scores, the method of marginal maximum likelihood estimation is employed for estimation of item parameters.

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