Aberrant behavior refers to any type of unusual behavior that would not be expected under normal circumstances. In educational and psychological testing, such behaviors have the potential to severely bias the aberrant examinee's test score while also jeopardizing the test scores of countless others. It is therefore crucial that aberrant examinees…

The array of different philosophical positions underlying contemporary views on competence, assessment strategies and justification have led to advances in assessment science. Challenges may arise when these philosophical positions are not considered in assessment design. These can include (a) a logical incompatibility leading to varied or…

This National Academy of Education (NAEd) volume provides guidance to key stakeholders on how to accurately report and interpret comparability assertions concerning large-scale educational assessments as well as how to ensure greater comparability by paying close attention to key aspects of assessment design, content, and procedures. The goal of…