Einstellung effect

As I set out here, Dr Chris Wheadon has come up with a beautifully simple solution to assessing students' essays which requires no rubrics, very little marking time and produces extremely reliable results with no attendant loss of validity. It relies on the cumulative power of comparative judgement and represents the future of assessment for subjects which rely on essay length answers to open-ended questions. If you doubt me, the reason might be that your experience of, and sense of success with, mark schemes has blinded you to better alternatives. Imagine you have 3 water jars, each with the capacity to hold a different, fixed [...]