Using Subpopulation Invariance to Assess Test Score Equity

Score equity assessment (SEA) is introduced, and placed within a fair assessment context that includes differential prediction or fair selection and differential item functioning. The notion of subpopulation invariance of linking functions is central to the assessment of score equity, just as it has been for differential item functioning and differential prediction. Advanced Placement (AP) data are used for illustrative purposes. The use of multiple-choice and constructed response items in AP provides an opportunity to observe a case where subpopulation invariance of linking functions does not hold (U.S. History), and a case in which it does hold (Calculus AB). The lack of invariance for U.S. History might be attributed to several sources. The role of SEA in assessing the fairness of test assembly processes is discussed.     

Assessment of Competence in Radiography Education

An action research project concerning the development of clinical assessment procedures in radiography education investigated the views of university‐based clinical lecturers and hospital radiographers concerning the existing assessment framework. Based on the outcomes of this initial review a revised summative assessment tool was developed, including assessment of professional conduct as well as technical competence. Evaluative comment from radiographers and students on the trialling of the tool was positive, and would seem to indicate a sound basis for further development.