 "Repeatability" looks at the variance when rating the same test signal again in comparison to the variance of the other test signals and "discriminability" analyses if listeners can distinguish between test signals of different conditions.As eGauge requires listening to every test signal twice, it is more effort to apply this than to post screen listeners based on the ratings of the hidden reference.However, if a listener has proven a reliable listener using eGauge, he or she can also be considered a reliable listener for future listening tests, provided the character of the test does not change; A reliable listener for stereo listening test is not necessarily equally good in perceiving artifacts in 5.1 or 22.2 format test items.