The purpose of item analysis is to identify unproductive items in the preliminary test so that they can be revised, eliminated, or replaced
Revised test likely contains more discriminating items with the higher reliability and greater predictive accuracy
Cross Validation
The practice of revalidating a test on a new sample of examinees
Validity Shrinkage
The common phenomenon wherein a test predicts the relevant criterion less accurately with a new sample than with the original tryout sample
Feedback from Examinees