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Ilhan, Mustafa; Öztürk, Nagihan Boztunç; Sahin, Melek Gülsah – Participatory Educational Research, 2020
In this research, the effect of an item's type and cognitive level on its difficulty index was investigated. The data source of the study consisted of the responses of the 12535 students in the Turkey sample (6079 and 6456 students from eighth and fourth grade respectively) of TIMSS 2015. The responses were a total of 215 items at the eighth-grade…
Descriptors: Test Items, Difficulty Level, Cognitive Processes, Responses