One of the most important contentions of the Rasch model of item analysis is that two tests of the same trait, having some items in common, can be linked together using a "linking constant" derived from the common items. This would be accomplished by administering both tests to a sample of testees, calibrating the items of the tests…

A procedure for scoring multiple-choice tests by assigning different weights to every option of a test item is investigated. The weighting method used was based on that proposed by Davis, which involves taking the upper and lower 27% of a sample, according to some criterion measure, and using the percentages of these groups marking an item option…

Technical improvements, which may be made in the reliability and validity of tests through confidence scores, are discussed. However, studies indicate that subjects do not handle their confidence uniformly. (MS)