In many testing programs it is assumed that the context or position in which an item is administered does not have a differential effect on examinee responses to the item. Violations of this assumption may bias item response theory estimates of item and person parameters. This study examines the potentially biasing effects of item position. A…

Automated scoring models for the "e-rater"® scoring engine were built and evaluated for the "GRE"® argument and issue-writing tasks. Prompt-specific, generic, and generic with prompt-specific intercept scoring models were built and evaluation statistics such as weighted kappas, Pearson correlations, standardized difference in…

Tasks are the most visible element in an educational assessment. Their purpose, however, is to provide evidence about targets of inference that cannot be directly seen at all: what examinees know and can do, more broadly conceived than can be observed in the context of any particular set of tasks. This paper concerns issues in an assessment design…