Table of Contents  |  Search Technical Documentation  |  References

NAEP Analysis and Scaling → Estimation of NAEP Score Scales → Item Response Theory Parameters → Reading Assessment Item Response Theory Parameters → IRT Parameters for Items in the Reading for Literary Experience Scale, by Block and Item, Grade 4 Reading Combined National and State Main Assessment: 2005

NAEP Technical DocumentationIRT parameters for items in the reading for literary experience scale, by block and item, grade 4 reading combined national and state main assessment: 2005

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 is 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), 2005 Reading Assessment.
R3	1	R017001	0.66	-0.95	0.00	†	†	†
	2	R017002	1.43	-0.58	0.21	†	†	†
	3	R017003	0.50	-0.01	†	0.24	-0.24	†
	4	R017004	0.83	1.00	0.00	†	†	†
	5	R017005	0.81	0.70	0.24	†	†	†
	6	R017006	0.88	0.93	0.00	†	†	†
	7	R017007	0.48	0.42	†	0.31	0.21	-0.52
	8	R017008	1.02	0.41	0.11	†	†	†
	9	R017009	0.60	-2.12	0.00	†	†	†
R4	1	R052901	1.14	-1.36	0.34	†	†	†
	2	R052902	0.94	-0.19	0.26	†	†	†
	3	R052903	1.65	-0.24	0.25	†	†	†
	4	R052904	0.62	-0.34	†	-0.18	0.18	†
	5	R052905	1.86	-0.27	0.26	†	†	†
	6	R052906	0.91	-0.33	0.00	†	†	†
	7	R052907	0.61	-0.07	†	1.08	-0.45	-0.62
	8	R052908	1.48	-0.46	0.24	†	†	†
	9	R052909	0.85	-0.87	0.00	†	†	†
	10	R052910	1.31	-0.44	0.32	†	†	†
R5	1	R012601	0.78	0.77	0.00	†	†	†
	2	R012602	1.37	1.13	0.18	†	†	†
	3	R012603	1.40	-0.06	0.22	†	†	†
	4	R012604	1.05	0.99	0.00	†	†	†
	5	R012605	0.81	0.94	0.28	†	†	†
	6	R012606	1.53	0.29	0.32	†	†	†
	7	R012607	0.90	1.19	†	1.06	-0.24	-0.81
	8	R012608	0.51	-0.97	0.31	†	†	†
	9	R012609	1.03	0.70	0.27	†	†	†
	10	R012610	1.65	0.33	0.35	†	†	†
	11	R012612	0.63	0.59	†	†	†	†
R9	1	R053001	0.60	-2.16	0.15	†	†	†
	2	R053002	1.34	-0.88	0.36	†	†	†
	3	R053003	0.99	-0.80	0.00	†	†	†
	4	R053004	0.64	-0.76	†	0.54	-0.54	†
	5	R053005	0.67	-0.97	0.20	†	†	†
	6	R053006	0.42	-0.15	†	0.05	-0.27	0.22
	7	R053007	0.70	-1.95	0.14	†	†	†
	8	R053008	0.81	-1.30	0.24	†	†	†
	9	R053009	0.65	-1.39	0.00	†	†	†
	10	R053010	0.61	-1.94	0.00	†	†	†
R11	1	R021601	0.52	-1.36	0.22	†	†	†
	2	R020401	0.78	-2.05	0.00	†	†	†
	3	R020601	1.32	-1.51	0.19	†	†	†
	4	R021101	0.48	-1.68	0.06	†	†	†
	5	R020701	0.89	-0.88	0.00	†	†	†
	6	R020501	1.04	0.26	0.15	†	†	†
	7	R022101	1.43	-1.12	0.17	†	†	†
	8	R021701	0.49	0.55	†	1.60	-1.60	†
	9	R022201	1.15	-1.57	0.32	†	†	†
	10	R021201	0.36	-1.19	†	-0.02	0.02	†

Printer-friendly Version