An item has a difficulty value of 85%. A novice test developer describes it as βvery difficultβ because the numerical value is high. What conceptual error has been made?
A.Confusing difficulty percentage with discrimination power
B.Ignoring that a higher difficulty percentage means more students answered correctly
C.Treating reliability as a measure of difficulty
D.Confusing criterion-referenced and norm-referenced interpretation
Correct answer is:
B. Ignoring that a higher difficulty percentage means more students answered correctly