This article explores the issue of identifying guessers -- with a specific focus on multiple-choice tests. Guessing has long been considered a problem due to the fact that it compromises validity. A test taker scoring higher than they should through guessing does not provide a picture of their actual ability. After an initial description of issues…

The calibration of test materials generally involves the interaction between empirical analysis and expert judgement. This paper explores the extent to which scale familiarity might affect expert judgement as a component of test validation in the calibration process. It forms part of a larger study that investigates the alignment of the…