Question

Definition of item difficulty in research

Answer 1

Item difficulty is an estimate of the skill level needed to pass an item. It is frequently measured by calculating the proportion of individuals passing an item. In order to increase efficient use of both the examiner’s and the examinee’s time, the item difficulty index values can be used to order the administration items so that a discontinue rule can be invoked to reduce the administration of more difficult items to individuals who would be unlikely to pass them.