- Surveys & Programs
- Data & Tools
- Fast Facts
- News & Events
- Publications & Products
- About Us
Table of Contents | Search Technical Documentation | References
NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → Technology and Engineering Literacy (TEL) Assessment IRT Parameters → IRT Parameters for Items in the Technology and Society Content Area, Grade 8 Technology and Engineering Literacy (TEL) National Assessment, by Assembly Unit and Item: 2018
NAEP Technical DocumentationIRT Parameters for Items in the Technology and Society Content Area, Grade 8 Technology and Engineering Literacy (TEL) National Assessment, by Assembly Unit and Item: 2018
| Assembly unit | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 | dj5 |
|---|---|---|---|---|---|---|---|---|---|---|
| T3 | 1 | D0016CL | 1.12 | -0.86 | † |
† |
† |
† |
† |
† |
| 2 | D001701 | 0.94 | -0.23 | 0.17 |
† |
† |
† |
† |
† | |
| 5 | D0020CL | 0.85 | 0.00 | † | † | † | † | † | † | |
| 6 | D002101 | 0.83 | 0.75 | 0.23 | † | † | † | † | † | |
| 7 | D002201 | 0.56 | 0.65 | † | 1.57 | -1.57 | † | † | † | |
| 8 | D0023CL | 0.63 | -1.14 | † | -0.38 | 0.38 | † | † | † | |
| 9 | D002401 | 0.63 | -0.09 | † | 0.34 | -0.34 | † | † | † | |
| 10 | D002501 | 0.88 | -0.63 | † | † | † | † | † | † | |
| 11 | D002601 | 0.80 | -0.68 | † | † | † | † | † | † | |
| T5 | 1 | D003701 | 1.06 | -0.64 | † | † | † | † | † | † |
| 2 | D003801 | 0.93 | -0.96 | † | † | † | † | † | † | |
| 3 | D003901 | 0.69 | -2.23 | † | † | † | † | † | † | |
| 4 | D004001 | 0.75 | -0.79 | † | † | † | † | † | † | |
| 5 | D004101 | 0.40 | -0.85 | † | -0.61 | 0.61 | † | † | † | |
| 9 | D0045CL | 0.42 | -0.54 | † | † | † | † | † | † | |
| 10 | D004601 | 0.90 | -0.85 | † | † | † | † | † | † | |
| T7 | 5 | D0060CL | 0.61 | -0.66 | † | -0.02 | 0.28 | -0.41 | 0.15 | † |
| 6 | D006101 | 0.61 | 0.77 | † | † | † | † | † | † | |
| 7 | D006201 | 0.55 | 1.16 | † | 0.70 | -0.70 | † | † | † | |
| 8 | D0063CL | 0.90 | 0.49 | † | † | † | † | † | † | |
| T8 | 6 | D0068CL | 0.86 | -1.16 | † | 0.02 | 0.20 | -0.22 | † | † |
| 7 | D0069CL | 0.83 | -1.01 | † | † | † | † | † | † | |
| 8 | D007001 | 1.02 | -0.96 | † | † | † | † | † | † | |
| 9 | D007101 | 0.82 | -1.12 | † | 1.42 | -1.42 | † | † | † | |
| T9 | 5 | D021801 | 0.92 | -2.01 | † | † | † | † | † | † |
| 6 | D021802 | 0.82 | 0.28 | † | † | † | † | † | † | |
| 7 | D0213CL | 0.57 | -0.80 | † | -0.21 | 0.21 | † | † | † | |
| 8 | D014601 | 0.61 | -0.77 | † | † | † | † | † | † | |
| 9 | D019501 | 1.33 | 0.37 | 0.20 | † | † | † | † | † | |
| 10 | D019502 | 0.71 | 0.42 | 0.21 | † | † | † | † | † | |
| 11 | D018901 | 0.97 | 0.78 | 0.20 | † | † | † | † | † | |
| 12 | D015601 | 1.22 | 1.19 | 0.25 | † | † | † | † | † | |
| T12 | 5 | D0089CL | 0.35 | -0.97 | † | 1.26 | -0.05 | -0.87 | 0.26 | -0.60 |
| 6 | D009001 | 0.59 | 0.55 | † | 0.67 | -0.67 | † | † | † | |
| 7 | D009101 | 0.74 | -0.80 | † | † | † | † | † | † | |
| 8 | D009201 | 0.80 | -0.13 | † | † | † | † | † | † | |
| 9 | D0093CL | 0.58 | -0.17 | † | 0.92 | -0.11 | -0.80 | † | † | |
| T14 | 8 | D0099CL | 0.92 | -1.15 | † | 0.65 | -0.65 | † | † | † |
| 9 | D0100CL | 0.95 | -1.43 | † | 0.76 | -0.76 | † | † | † | |
| 10 | D0101CL | 1.16 | -1.69 | † | 0.22 | -0.22 | † | † | † | |
| 11 | D010201 | 0.84 | -0.18 | † | 0.92 | -0.04 | -0.88 | † | † | |
| 12 | D010301 | 0.73 | -0.16 | † | 1.18 | -0.53 | -0.65 | † | † | |
| T15 | 1 | D010401 | 0.87 | -0.71 | 0.17 | † | † | † | † | † |
| 3 | D010601 | 0.65 | 0.16 | † | 0.43 | -0.43 | † | † | † | |
| 4 | D010701 | 0.73 | -1.39 | † | -0.09 | 0.09 | † | † | † | |
| 5 | D010801 | 0.64 | -0.25 | † | † | † | † | † | † | |
| 6 | D010901 | 0.60 | -1.37 | † | 0.51 | -0.51 | † | † | † | |
| T16 | 1 | D0179CL | 0.52 | -0.56 | † | 0.44 | -0.44 | † | † | † |
| 2 | D017905 | 1.06 | -0.82 | † | † | † | † | † | † | |
| 3 | D015401 | 0.74 | -0.51 | † | † | † | † | † | † | |
| 4 | D015402 | 0.76 | -1.73 | † | † | † | † | † | † | |
| T17 | 9 | D019601 | 0.63 | -0.93 | † | † | † | † | † | † |
| 10 | D015501 | 1.12 | -0.08 | 0.26 | † | † | † | † | † | |
| 11 | D017301 | 0.59 | 0.56 | 0.18 | † | † | † | † | † | |
| 12 | D020101 | 0.95 | 0.63 | 0.26 | † | † | † | † | † | |
| T20 | 3 | D019001 | 0.77 | -0.79 | 0.20 | † | † | † | † | † |
| 6 | D018801 | 1.25 | 0.19 | † | † | † | † | † | † | |
| 7 | D018802 | 0.97 | 0.22 | † | † | † | † | † | † | |
| 8 | D018803 | 1.13 | -0.40 | † | † | † | † | † | † | |
| 9 | D0174CL | 0.84 | 0.75 | † | † | † | † | † | † | |
| 10 | D017409 | 0.79 | -0.49 | † | † | † | † | † | † | |
| †
Not applicable; c parameters are not estimated for the two-parameter logistic or 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 assumed to be exactly zero and is not estimated 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), 2018 Technology and Engineering Literacy (TEL) Assessment. | ||||||||||
Last updated 02 November 2022 (SK)
