NAEP Technical DocumentationIRT Parameters for Items in the Culture Subscale, Grade 8 U.S. History National Assessment, by Block and Item: 2022

IRT parameters for items in the culture subscale, grade 8 U.S. history national assessment, by block and item: 2022
Item	NAEP ID	a	b	c	d	d	d
Not applicable; c parameters are not estimated for the two-parameter logistic or generalized partial credit models, and d parameters are not estimated for the two-parameter or three-parameter logistic models.
For item j, a represents the discriminatory power of the item, b represents a location parameter related to item difficulty, c represents the guessing parameter, and d represents the category threshold parameter for category i. The c parameter value is assumed to be exactly zero and is not estimated for items scaled with the two-parameter logistic model. For item j, d may not sum to zero because of rounding.
U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2022 U.S. History Assessment.
Block H1
1	H084801	0.951	1.879		0.671	-0.671
2	H035602	1.710	0.961	0.326
10	H036201	0.547	-1.185	0.247
15	H085701	0.788	0.559	0.169
19	H036702	1.160	-1.593	0.261
20	H070901	0.931	0.659	0.150
22	H071601	0.555	1.537		0.869	-0.869
Block H2
4	H059101	0.733	1.027	0.250
5	H082201	0.971	1.281	0.264
10	H059401	1.026	0.706	0.276
14	H059801	0.954	0.282		0.161	-0.161
18	H086201	1.339	0.073	0.321
Block H3
12	H070801	0.536	1.224		0.602	-0.602
15	H038501	1.054	0.994	0.206
16	H087401	0.527	2.293		1.802	0.453	-2.255
19	H073401	0.673	1.042	0.224
20	H038801	0.769	1.088	0.191
21	H038802	0.808	-0.006	0.259
22	H038901	1.229	0.651	0.218
Block H4
1	H083101	1.013	0.225	0.217
4	H088301	0.652	1.860		0.646	-0.646
5	H069101	0.568	0.288	0.239
6	H082401	1.110	0.787	0.186
7	H082402	0.680	1.285		-1.291	1.291
8	H069201	0.434	-0.246	0.303
9	H069301	1.055	0.974	0.233
13	H069701	0.885	-0.161	0.186
14	H069801	0.343	0.505		1.122	-0.023	-1.099
17	H070101	0.916	1.330	0.284
Block H5
1	H088101	1.087	1.749	0.231
3	H083301	0.662	-0.728	0.317
5	H088401	0.650	0.674		0.750	0.393	-1.143
8	H085201	1.149	0.944	0.327
10	H087201	1.592	1.137	0.230
16	H073001	0.399	0.710		0.229	-0.229
19	H084401	0.977	1.105	0.212
Block H6
8	H082301	0.496	0.496		0.081	-0.081
9	H085101	1.179	0.145	0.175
10	H089901	1.395	0.177	0.203
14	H082801	0.867	1.367	0.335
Block H7
3	H100801	0.980	-0.666	0.184
5	H105701	1.080	0.052	0.281
6	H105801	0.311	-1.200		-2.205	2.205
20	H100201	0.305	1.266		-0.180	2.085	-1.905
Block H8
1	H110201	0.844	0.763	0.244
5	H1056MS	0.407	1.745
10	H103801	0.924	1.729	0.301
13	H101801	0.384	-0.274		-0.755	0.755
14	H104201	0.527	0.875	0.217
15	H109501	0.471	1.395		1.018	-1.018
16	H109401	1.064	0.242	0.234
18	H107301	1.631	0.619	0.301
19	H107401	0.532	0.893		0.578	-0.578
Block H9
1	H107901	0.489	1.026	0.271
3	H103001	0.939	0.714	0.335
9	H101401	0.720	-0.813	0.219
11	H104001	0.574	1.313		1.094	-1.094
13	H099601	0.808	0.783	0.315
14	H099501	0.888	0.054	0.160
15	H099701	0.666	0.526		0.161	-0.161

Last updated 24 July 2024 (SK)

Printer-friendly Version

​​​​NAEP Technical DocumentationIRT Parameters for Items in the Culture Subscale, Grade 8 U.S. History National Assessment, by Block and Item: 2022

NAEP Technical DocumentationIRT Parameters for Items in the Culture Subscale, Grade 8 U.S. History National Assessment, by Block and Item: 2022