Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 1 Comparison of the item difficulties before and after item selection

From: Practical significance of item misfit and its manifestations in constructs assessed in large-scale studies

	Trend and new items				Trend items only
	∑_Items	Score Range	M	SD	∑_Items	Score Range	M	SD
No selection	402	191.52–798.25	500.00	100.00	88	402.40–696.78	537.52	57.02
Cut-off = 0.06	266	201.01–797.88	483.98	114.20	13	450.93–623.98	527.42	41.13
Cut-off = 0.08	323	207.26–800.73	492.52	105.23	28	402.40–623.98	515.45	44.54

Back to article page