NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → IRT Parameters for the Reading Assessments → IRT Parameters for Items in the Reading for Literary Experience Scale, Grade 12 Reading National Main Assessment, by Item and Block: 2009

NAEP Technical DocumentationIRT parameters for items in the reading for literary experience scale, grade 12 reading national main assessment, by item and block: 2009

Block	Item	NAEP ID	aj	bj	cj	dj1	dj2	dj3
† 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, 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 value is exactly zero for items scaled with the two-parameter logistic model. For item j, dji 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), 2009 Reading Assessment.
F3	1	R017101	1.21	-0.77	†	†	†	†
	2	R017102	0.63	0.36	†	-0.03	0.03	†
	3	R017103	0.65	-0.36	0.18	†	†	†
	4	R017104	1.02	0.10	†	0.16	-0.16	†
	5	R017105	0.89	0.83	†	0.70	-0.70	†
	6	R017106	0.65	0.60	0.19	†	†	†
	7	R017107	0.47	0.36	†	0.60	-0.60	†
	8	R017108	1.34	0.60	†	†	†	†
	9	R017109	0.73	-0.96	0.21	†	†	†
	10	R017110	1.16	-0.40	†	†	†	†
F4	1	R013501	1.03	0.01	†	†	†	†
	2	R013502	2.29	-0.12	0.37	†	†	†
	3	R013503	0.50	0.11	†	†	†	†
	4	R013504	0.83	-0.14	0.19	†	†	†
	5	R013505	0.67	-0.55	†	†	†	†
	6	R013506	0.77	1.23	†	†	†	†
	7	R013507	1.16	0.29	0.17	†	†	†
	8	R013508	0.36	0.86	†	†	†	†
	9	R013509	0.91	0.74	†	†	†	†
F5	1	R016301	0.61	-1.36	†	†	†	†
	2	R016302	0.47	0.20	†	1.05	-1.05	†
	3	R016303	0.63	0.65	†	0.61	-0.61	†
	4	R016304	1.84	0.09	0.39	†	†	†
	5	R016305	0.33	-0.54	†	0.08	-0.08	†
	6	R016306	0.64	0.53	†	0.13	-0.13	†
	7	R016307	0.64	1.10	†	0.78	-0.78	†
	8	R016308	0.47	1.94	†	0.65	0.32	-0.98
R1	1	R059601	0.64	0.05	0.22	†	†	†
	2	R059602	0.59	-0.69	0.27	†	†	†
	3	R059603	0.75	-0.97	0.21	†	†	†
	4	R059604	0.82	-1.89	†	†	†	†
	5	R059610	0.35	-0.39	†	-0.14	-0.17	0.31
	6	R059606	0.74	-0.93	†	0.34	-0.34	†
	7	R059605	0.76	0.45	†	0.82	-0.82	†
	8	R059608	0.51	-1.33	0.25	†	†	†
	9	R059609	0.83	-2.03	0.23	†	†	†
	10	R059607	0.51	-1.42	†	0.08	-0.08	†
R2	1	R059801	1.20	0.36	0.22	†	†	†
	2	R059802	0.63	2.12	0.28	†	†	†
	3	R059803	0.62	0.09	†	1.01	0.23	-1.24
	4	R059804	1.06	-1.14	0.37	†	†	†
	5	R059805	0.99	-0.83	0.28	†	†	†
	6	R059806	0.55	0.48	†	-0.20	0.20	†
	7	R059807	1.21	0.28	†	1.04	-1.04	†
	8	R059808	1.66	0.17	0.40	†	†	†
	9	R059809	0.90	-0.44	†	†	†	†
	1	R059810	1.71	0.01	0.30	†	†	†
R5	1	R061601	1.37	-0.79	0.42	†	†	†
	2	R061602	0.69	-0.67	†	-0.11	0.11	†
	3	R061603	0.97	-1.65	0.26	†	†	†
	4	R061604	0.63	-1.03	†	1.19	-1.19	†
	5	R061605	1.26	-0.01	0.26	†	†	†
	6	R061606	0.77	0.55	†	0.09	-0.09	†
	7	R061607	0.74	0.02	†	0.81	0.56	-1.37
	8	R061608	1.49	1.26	†	†	†	†
	9	R061609	1.51	0.97	0.24	†	†	†
R6	1	R061901	1.82	-0.24	0.24	†	†	†
	2	R061902	1.93	0.68	0.55	†	†	†
	3	R061903	1.17	0.17	0.22	†	†	†
	4	R061904	2.26	-0.07	†	†	†	†
	5	R061905	0.71	0.12	†	†	†	†
	6	R061906	0.63	-0.42	†	0.27	-0.27	†
	7	R061909	0.97	0.64	†	1.05	-0.47	-0.58
	8	R061907	1.95	0.64	0.23	†	†	†
	9	R061908	0.87	-0.19	†	0.34	-0.34	†
	10	R061910	0.93	0.41	†	0.76	-0.76	†
	11	R061911	1.86	0.16	0.35	†	†	†

Printer-friendly Version