Liz Harrison

Optionality is any feature in an examination that allows different students to achieve the same qualification without responding to exactly the same set of questions. Where optionality is offered within an exam paper, it is intended that the options should be equivalent in demand. Since we cannot...
AEA-Europe's annual conference is a key opportunity for those within the assessment community to share ideas and critically challenge their own thinking. The theme for 2017 – ‘Assessment cultures in a globalised world’ – inspired CERP researchers to delve into a wide selection of assessment matters...
From summer 2017, the preferred method for vertical scaling of tiered exams will be chained equipercentile equating. AQA has previously used the partial credit model (PCM) to perform vertical scaling. For either method, differential item functioning (DIF) should be assessed among the common items,...