An approximate statistical test of the equality of two
intraclass reliability coefficients based on the same
sample of people is derived. Such a test is needed when a
researcher wishes to compare the reliability of two measurement
procedures and both procedures can be applied
to the performances or products of the same group of
individuals. A numerical example is presented. Monte
carlo studies indicate that the proposed test effectively
controls Type I error with as few as two or three measurements
on each of 50 people. Index terms: equality
of related intraclass reliability coefficients, intraclass
reliability, sampling theory, Speannan-Brown extrapolation,
Alsawaimeh, Yousef M.; Feldt, Leonard S..
Testing the Equality of Two Related Intraclass Reliability Coefficients.
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