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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → U.S. History Assessment IRT Parameters → IRT Parameters for Items in the World Role Subscale, Grade 8 U.S. History National Assessment, by Block and Item: 2022
NAEP Technical DocumentationIRT Parameters for Items in the World Role 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 | |||||||
| 7 | H036001 | 1.393 | 0.520 | 0.400 | |||
| 9 | H036101 | 0.928 | -0.823 | ||||
| 14 | H036501 | 0.928 | 0.411 | 0.242 | |||
| 16 | H083701 | 0.947 | 0.961 | 0.321 | |||
| Block H2 | |||||||
| 1 | H088201 | 0.813 | -0.499 | 0.288 | |||
| 6 | H090201 | 0.942 | 1.372 | 0.210 | -0.114 | -0.095 | |
| 19 | H087701 | 0.900 | 1.284 | 0.290 | |||
| 20 | H084601 | 1.503 | 1.148 | 0.249 | |||
| Block H3 | |||||||
| 2 | H097901 | 0.656 | -0.059 | 0.418 | -0.418 | ||
| 9 | H038301 | 0.811 | 0.534 | -0.512 | 0.512 | ||
| 17 | H038701 | 0.581 | -0.678 | 0.271 | |||
| 18 | H038702 | 0.710 | 1.732 | 0.862 | -0.862 | ||
| Block H4 | |||||||
| 2 | H068701 | 0.911 | 0.135 | 0.379 | |||
| 3 | H068801 | 0.641 | 0.452 | 0.302 | |||
| 11 | H069501 | 0.972 | 1.273 | 0.374 | |||
| 16 | H070001 | 0.570 | 0.997 | ||||
| 18 | H070201 | 2.115 | 1.229 | 0.197 | |||
| Block H5 | |||||||
| 4 | H085001 | 0.881 | 0.375 | 0.247 | |||
| 9 | H090101 | 0.902 | 1.148 | 0.209 | |||
| 15 | H083901 | 0.958 | 0.719 | 0.252 | |||
| 21 | H086301 | 1.205 | 0.273 | 0.311 | |||
| Block H6 | |||||||
| 1 | H041901 | 1.885 | 1.441 | 0.334 | |||
| 5 | H042201 | 0.987 | 2.011 | 0.604 | -0.604 | ||
| 6 | H042301 | 0.773 | 2.019 | 0.250 | |||
| 20 | H0429CL | 0.363 | 0.299 | 0.703 | -0.112 | -0.592 | |
| 22 | H087901 | 1.177 | -0.122 | 0.185 | |||
| 23 | H089501 | 1.007 | 0.401 | 0.306 | |||
| Block H7 | |||||||
| 18 | H102101 | 1.927 | 1.431 | 0.259 | |||
| 19 | H1022MS | 0.175 | -0.669 | 7.948 | -7.948 | ||
| Block H8 | |||||||
| 6 | H105901 | 1.661 | 0.399 | 0.204 | |||
| 7 | H106001 | 1.304 | 0.904 | ||||
| 11 | H106601 | 0.936 | 1.252 | 0.301 | |||
| Block H9 | |||||||
| 21 | H110001 | 0.940 | 1.036 | 0.272 | |||
Last updated 24 July 2024 (SK)