Estimation of measurement error variance at specific score levels

被引：19

作者：

Feldt, LS

Qualls, AL

机构：

[1] University of Iowa, 334 Lindquist Center, Iowa City

[2] University of Iowa, 340A Lindquist Center, Iowa City

来源：

JOURNAL OF EDUCATIONAL MEASUREMENT | 1996年 / 33卷 / 02期

关键词：

D O I：

10.1111/j.1745-3984.1996.tb00486.x

中图分类号：

G44 [教育心理学];

学科分类号：

0402 ; 040202 ;

摘要：

An improved method is derived for estimating conditional measurement error variances, that is, error variances specific to individual examinees or specific to each point on the raw score scale of the test. The method involves partitioning the test into short parallel parts, computing for each examinee the unbiased estimate of the variance of part-test scores, and multiplying this variance by a constant dictated by classical test theory. Empirical data are used to corroborate the principal theoretical deductions.

引用

页码：141 / 156

页数：16

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