Previous investigations of the ability of content experts and test developers to estimate item difficulty have, for themost part, produced disappointing results. These investigations were based on a noncomparative method of independently rating the difficulty of items. In this article, we argue that, by eliciting comparative judgments of…

Two experiments examine the psychometric effects of providing immediate feedback on the correctness of answers to open-ended questions, and allowing participants to revise their answers following feedback. Participants answering verbal and math questions are able to correct many of their initial incorrect answers, resulting in higher revised…