Effect of measurement error on tests of statistical significance

被引:32
作者
Charter, RA
机构
[1] Dept. of Vet. Affairs Medical Center, Long Beach, CA
[2] Psychology Service (116B), Vet. Administration Medical Center, Long Beach, CA 90822
关键词
D O I
10.1080/01688639708403872
中图分类号
B849 [应用心理学];
学科分类号
040203 ;
摘要
Using the domain-sampling model from classical test theory, the effects of measurement error on statistical tests for the difference between an obtained mean and a hypothesized mean, and the difference between two means, are demonstrated. The results indicate that lowering the reliability (i.e., increasing measurement error) of dependent variable data increases the chance of obtaining a nonsignificant result when a significant result is the correct outcome. Lowering the reliability also produces reduced estimates of strength of association.
引用
收藏
页码:458 / 462
页数:5
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