IRT Parameters for the Democracy Subscale, Grade 8 U.S. History National Assessment, by Item and Block: 2014

Table of Contents | Search Technical Documentation | References

NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → U.S. History Assessment IRT Parameters → IRT Parameters for the Democracy Subscale, Grade 8 U.S. History National Assessment, by Item and Block: 2014

NAEP Technical DocumentationIRT parameters for the democracy subscale, grade 8 U.S. history national assessment, by item and block: 2014
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 the two-parameter logistic model or generalized partial credit models, and d parameters are not estimated for two-parameter or three-parameter models. NOTE: For item j, aj represents the discriminatory power of the item, bj represents a location parameter related to item difficulty, cj represents the guessing parameter, and dji represents the category threshold parameter for category i. The c parameter is assumed to be exactly zero and is not estimated for items scaled with the two-parameter logistic model. For item j, dji may not sum to zero beecause of rounding. In 2014, grades 4 and 12 were not assessed. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2014 U.S. History Assessment.
H3	3	H035701	0.81	1.35	.21	†	†	†	†	†
	4	H035801	0.60	1.68	†	-0.28	0.28	†	†	†
	14	H036601	0.55	1.66	.13	†	†	†	†	†
H4	1	H058801	0.32	0.96	.25	†	†	†	†	†
	2	H058901	0.55	2.61	.33	†	†	†	†	†
	3	H059001	0.66	0.20	†	0.11	-0.11	†	†	†
	5	H059201	0.59	0.36	†	0.20	-0.20	†	†	†
	6	H059301	0.63	1.41	.26	†	†	†	†	†
	15	H060201	0.55	0.31	†	0.35	-0.35	†	†	†
H5	1	H037901	0.47	0.69	.24	†	†	†	†	†
	2	H038001	1.00	-1.86	.24	†	†	†	†	†
	3	H038101	0.72	0.55	.29	†	†	†	†	†
	4	H038102	1.63	0.62	.20	†	†	†	†	†
	5	H038103	0.50	1.82	†	-0.78	0.34	0.45	†	†
	6	H038201	1.31	0.49	.23	†	†	†	†	†
	7	H038202	0.78	-0.04	.18	†	†	†	†	†
	17	H039001	0.69	1.66	†	-0.32	0.32	†	†	†
H6	3	H068901	0.81	1.66	.23	†	†	†	†	†
	8	H069401	0.52	1.11	†	0.16	-0.16	†	†	†
	13	H069901	0.77	1.47	.15	†	†	†	†	†
H7	1	H081801	0.49	1.73	.31	†	†	†	†	†
	3	H084901	0.76	0.67	†	0.23	-0.23	†	†	†
	11	H090501	0.39	-0.24	.24	†	†	†	†	†
	13	H084301	0.40	1.31	†	1.15	-0.74	-0.41	†	†
H8	3	H097801	0.35	1.24	†	0.97	-1.12	0.15	†	†
	8	H082501	0.38	1.63	.28	†	†	†	†	†
	10	H082701	0.42	0.58	.25	†	†	†	†	†
	11	H082702	0.87	-0.62	.26	†	†	†	†	†
	12	H082901	0.53	0.47	†	0.24	-0.24	†	†	†
	13	H087101	0.41	0.67	.23	†	†	†	†	†
	16	H091101	0.60	0.64	†	0.29	0.11	-0.39	†	†
H9	10	H083501	0.67	2.23	.34	†	†	†	†	†
H9	12	H085501	0.51	1.45	.31	†	†	†	†	†
H10	2	H042001	0.59	1.64	.17	†	†	†	†	†
	8	H042501	0.97	1.29	.16	†	†	†	†	†
	9	H042601	0.59	-0.37	.27	†	†	†	†	†
	10	H042602	1.42	1.97	.08	†	†	†	†	†
	13	H042801	0.52	1.25	†	2.08	-1.63	-0.45	†	†
H11	3	H070501	0.63	1.50	.19	†	†	†	†	†
	10	H071201	0.66	2.33	.26	†	†	†	†	†
	16	H071801	0.85	1.21	.28	†	†	†	†	†
H12	3	H072101	0.39	0.17	.21	†	†	†	†	†
	7	H072501	0.51	0.83	.24	†	†	†	†	†
	14	H073201	0.50	0.35	.23	†	†	†	†	†

Last updated 30 August 2021 (ML)

Printer-friendly Version