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A Significance Test for the Hypothesis That Two Variables Measure the Same Trait Except for Errors of Measurement

Author(s):
Lord, Frederic M.
Publication Year:
1956
Report Number:
RB-56-09
Source:
ETS Research Bulletin
Document Type:
Report
Page Count:
31
Subject/Key Words:
Correlation, Error of Measurement, Hypothesis Testing, Test Equivalence

Abstract

The likelihood-ratio significance test is derived for the hypothesis that after correction for attenuation two variables have a perfect correlation in the population from which the sample is drawn.

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