What does the correction for attenuation formula show?
A)what the validity coefficient would be if the test was longer (i.e., had more items)
B)what the validity coefficient would be if the predictor and/or criterion were perfectly reliable
C)what the true variance in individuals' scores would be if range restriction was not present
D)what the validity coefficient would be if criterion contamination was not present

Question

Quizplus · Accepted Answer

The correction for attenuation formula is used to estimate what the validity coefficient (the correlation between a predictor and a criterion) would be if both the predictor and the criterion were perfectly reliable. This formula corrects for the underestimation of the true relationship due to measurement error.

What Does the Correction for Attenuation Formula Show