NAEP Analysis and Scaling - IRT Parameters for the Economic and Technological Changes and Their Relation to Society, Ideas, and the Environment Scale, Grade 4 U.S. History National Assessment, by Item and Block: 2010

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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → U.S. History Assessment IRT Parameters → IRT Parameters for the Economic and Technological Changes and Their Relation to Society, Ideas, and the Environment Scale, Grade 4 U.S. History National Assessment, by Item and Block: 2010

NAEP Technical DocumentationIRT parameters for the economic and technological changes and their relation to society, ideas, and the environment scale, grade 4 U.S. history national assessment, by item and block: 2010
Block	Item	NAEP ID	a_j	b_j	c_j	d_j1	d_j2	d_j3	d_j4	d_j5
† Not applicable; c parameters are not estimated for generalized partial credit models, and d parameters are not estimated for two-parameter or three-parameter logistic models. NOTE: For item j, a_j represents the discriminatory power of the item, b_j represents a location parameter related to item difficulty, c_j represents the guessing parameter, and d_ji represents the category threshold parameter for category i. The c parameter value is exactly zero for items scaled with the two-parameter logistic model. For item j, d_ji may not sum to zero because of rounding. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2010 U.S. History Assessment.
H3	1	H065501	0.95	1.04	0.29	†	†	†	†	†
H4	2	H054201	0.45	-0.75	0.23	†	†	†	†	†
	3	H054301	0.84	-1.04	†	†	†	†	†	†
	4	H054401	0.70	-0.39	0.25	†	†	†	†	†
	5	H054501	1.00	1.32	0.27	†	†	†	†	†
	6	H054601	0.40	0.99	†	1.68	-1.68	†	†	†
	10	H055001	1.26	0.42	0.27	†	†	†	†	†
	11	H055101	1.07	0.84	0.23	†	†	†	†	†
	12	H055201	1.07	0.37	0.28	†	†	†	†	†
	13	H055301	0.58	1.21	†	0.57	-0.57	†	†	†
H5	11	H056701	0.37	-0.48	0.26	†	†	†	†	†
	12	H056801	0.49	-0.33	†	2.25	-2.25	†	†	†
	15	H057101	0.63	-0.17	0.23	†	†	†	†	†
H6	4	H067401	0.59	0.47	†	0.97	-0.97	†	†	†
	8	H067801	1.07	0.56	0.23	†	†	†	†	†
	13	H068301	0.53	1.56	†	0.16	-0.16	†	†	†
H7	1	H077101	0.95	-0.23	0.33	†	†	†	†	†
	8	H078901	0.64	0.63	0.29	†	†	†	†	†
	9	H078903	0.50	0.29	†	0.96	-0.96	†	†	†
H8	9	H080401	0.41	-0.73	†	0.05	0.58	-0.63	†	†
	14	H078201	0.50	1.16	†	0.62	-0.62	†	†	†
	16	H097701	1.22	0.59	0.26	†	†	†	†	†

Last updated 01 July 2014 (GF)

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