Correction for attenuation with biased reliability estimates and correlated errors in populations and samples

被引：24

作者：

Zimmerman, Donald W. ^{[1
]}

机构：

[1] Carleton Univ, Ottawa, ON K1S 5B6, Canada

来源：

EDUCATIONAL AND PSYCHOLOGICAL MEASUREMENT | 2007年 / 67卷 / 06期

关键词：

correction for attenuation; Spearman attenuation formula; error of measurement; reliability; true scores; error scores; observed scores; correlated errors; population; sample;

D O I：

10.1177/0013164406299132

中图分类号：

G44 [教育心理学];

学科分类号：

0402 ; 040202 ;

摘要：

Properties of the Spearman correction for attenuation were investigated using Monte Carlo methods, under conditions where correlations between error scores exist as a population parameter and also where correlated errors arise by chance in random sampling. Equations allowing for all possible dependence among true and error scores on two tests at both the sample and population levels were derived and compared to simulation results. The additional influence of biased estimates of reliability at both levels was examined. Research settings under which the correction for attenuation can be useful in data analysis and those under which it is inaccurate and extremely variable were distinguished.

引用

页码：920 / 939

页数：20

共 24 条

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[12] The correction for attenuation [J].