NAEP Analysis and Scaling - IRT Parameters for the Gathering of Interactions of Peoples, Cultures, and Ideas Scale, by Block and Item, Grade 12 U.S. History National Main Assessment (Accommodations Permitted [R3]): 2001

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 Gathering of Interactions of Peoples, Cultures, and Ideas Scale, by Block and Item, Grade 12 U.S. History National Main Assessment (Accommodations Permitted [R3]): 2001

NAEP Technical DocumentationIRT parameters for the gathering of interactions of peoples, cultures, and ideas scale, by block and item, grade 12 U.S. history national main assessment (accommodations permitted [R3]): 2001
Block	Item	NAEP ID	a_j	b_j	c_j	d_j1	d_j2	d_j3	d_j4	d_j5
H3	2	H044201	1.09	0.60	0.21	†	†	†	†	†
	3	H044301	0.57	0.90	0.00	1.45	0.56	-2.02	†	†
	6	H044601	0.49	-0.90	0.21	†	†	†	†	†
	13	H045101	0.68	0.72	0.30	†	†	†	†	†
	14	H045102	0.89	0.61	0.00	0.77	-0.77	†	†	†
	16	H045301	0.50	1.30	0.00	-2.13	2.13	†	†	†
H4	1	H045501	0.73	0.56	0.00	2.17	-0.13	-2.04	†	†
H4	7	H046101	0.31	2.23	0.00	†	†	†	†	†
H5	2	H062101	0.79	2.74	0.16	†	†	†	†	†
H5	15	H063401	0.67	-0.15	0.00	1.00	0.03	-1.03	†	†
H6	5	H049001	0.42	0.09	0.25	†	†	†	†	†
	8	H049201	1.05	1.28	0.18	†	†	†	†	†
	9	H049301	1.23	0.91	0.32	†	†	†	†	†
	11	H049501	0.98	-0.88	0.24	†	†	†	†	†
	12	H049502	1.22	0.77	0.29	†	†	†	†	†
	13	H049503	0.90	1.54	0.00	0.60	-0.60	†	†	†
H7	3	H050201	0.76	0.38	0.00	1.80	-1.80	†	†	†
	4	H050202	0.91	1.15	0.18	†	†	†	†	†
	5	H050203	1.23	2.00	0.24	†	†	†	†	†
	11	H050801	0.77	-0.31	0.22	†	†	†	†	†
	15	H051101	1.37	-0.15	0.00	†	†	†	†	†
	16	H051102	0.89	-0.03	0.00	0.26	-0.26	†	†	†
H8	1	H051301	0.73	1.22	0.00	0.64	-0.64	†	†	†
	5	H051701	1.93	1.26	0.18	†	†	†	†	†
	6	H051801	1.41	0.21	0.28	†	†	†	†	†
	7	H051901	1.38	0.47	0.15	†	†	†	†	†
H9	1	H060401	0.83	0.57	0.23	†	†	†	†	†
	2	H060501	0.74	-0.04	0.22	†	†	†	†	†
	6	H060901	0.65	-0.58	0.33	†	†	†	†	†
	7	H061001	0.64	0.86	0.35	†	†	†	†	†
	8	H061101	0.71	1.37	0.31	†	†	†	†	†
	10	H061301	1.49	0.66	0.29	†	†	†	†	†
	13	H061601	0.43	-0.47	0.00	1.50	-1.50	†	†	†
H11	13	H065001	1.37	-0.32	0.27	†	†	†	†	†
	14	H065101	0.74	0.84	0.00	0.75	-0.75	†	†	†
	15	H065201	0.70	0.41	0.00	0.79	-0.79	†	†	†
	16	H065301	0.75	0.30	0.00	0.77	-0.77	†	†	†
	17	H065401	0.61	0.45	0.00	1.06	-0.68	-0.38	†	†
† Not applicable; the number of item parameters estimated depends upon the IRT model used for scaling. 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 is the category threshold parameter for category i. The c-parameter value is exactly zero for items scaled with the two-parameter logistic model or the generalized partial credit model. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2001 U.S. History Assessment.

Last updated 16 July 2008 (RF)

Printer-friendly Version