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NAEP Analysis and Scaling → Estimation of NAEP Score Scales → NAEP Assessment IRT Parameters → Technology and Engineering Literacy IRT Parameters → IRT Parameters for the Design and Systems Content Area, Grade 8 Technology and Engineering Literacy (TEL) National Assessment, by Item and Assembly Unit: 2014
| Assembly unit | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 |
|---|---|---|---|---|---|---|---|---|---|
| T2 | 3 | D0012CL | 0.37 | -0.54 | † | 0.24 | -0.08 | 0.60 | -0.76 |
| T4 | 1 | D002701 | 0.55 | -0.08 | 0.30 | † | † | † | † |
| 2 | D002801 | 0.51 | 0.33 | † | 2.09 | -2.09 | † | † | |
| 3 | D002901 | 0.58 | -1.37 | 0.26 | † | † | † | † | |
| 4 | D003001 | 0.41 | -0.39 | † | 0.65 | -0.65 | † | † | |
| 5 | D003101 | 0.65 | -0.69 | † | † | † | † | † | |
| 6 | D003201 | 0.66 | 1.01 | † | 1.34 | -1.34 | † | † | |
| 7 | D003301 | 0.44 | -1.13 | † | -1.10 | 1.10 | † | † | |
| 8 | D003401 | 0.37 | 0.62 | † | † | † | † | † | |
| 9 | D003501 | 0.84 | -1.15 | 0.22 | † | † | † | † | |
| 10 | D003601 | 0.84 | 0.18 | † | † | † | † | † | |
| T9 | 1 | D007201 | 0.43 | -0.64 | † | 0.88 | -0.50 | -0.38 | † |
| 2 | D007301 | 0.39 | -1.65 | † | -0.73 | 0.73 | † | † | |
| 3 | D0074CL | 0.40 | -0.76 | † | 1.11 | -1.11 | † | † | |
| 4 | D0075CL | 0.41 | -0.45 | † | -0.16 | 0.16 | † | † | |
| T10 | 1 | D019101 | 0.39 | -1.00 | 0.23 | † | † | † | † |
| 2 | D019102 | 1.11 | -1.25 | 0.24 | † | † | † | † | |
| 3 | D022601 | 0.36 | -0.39 | † | 0.22 | -0.22 | † | † | |
| 4 | D0186CL | 0.66 | 0.34 | † | † | † | † | † | |
| 5 | D014101 | 0.91 | 1.09 | 0.20 | † | † | † | † | |
| 7 | D0185CL | 0.26 | -0.41 | † | -1.74 | 1.74 | † | † | |
| 8 | D018701 | 1.04 | 1.69 | 0.14 | † | † | † | † | |
| T13 | 1 | D0094CL | 0.44 | -4.36 | † | † | † | † | † |
| 2 | D0095CL | 0.54 | -0.85 | † | † | † | † | † | |
| 3 | D009601 | 0.86 | 0.64 | † | † | † | † | † | |
| 4 | D0097CL | 0.25 | -0.15 | † | 1.44 | -1.44 | † | † | |
| 5 | D009801 | 0.79 | 0.41 | † | † | † | † | † | |
| T14 | 1 | D014801 | 0.85 | -0.33 | 0.23 | † | † | † | † |
| 2 | D019201 | 1.19 | 0.34 | 0.22 | † | † | † | † | |
| 3 | D0151CL | 0.23 | -0.54 | † | -0.06 | 0.06 | † | † | |
| 4 | D0184CL | 0.53 | -0.28 | † | 0.52 | -0.52 | † | † | |
| 5 | D016501 | 0.73 | 1.19 | 0.22 | † | † | † | † | |
| 6 | D016701 | 0.34 | 0.15 | † | -3.45 | 3.45 | † | † | |
| 7 | D0167CL | 0.63 | 0.49 | † | 1.00 | -1.00 | † | † | |
| T15 | 1 | D014301 | 0.34 | -0.81 | † | 0.14 | -0.14 | † | † |
| 2 | D014302 | 0.62 | -1.60 | 0.23 | † | † | † | † | |
| 3 | D014201 | 0.84 | 1.27 | 0.23 | † | † | † | † | |
| 4 | D0142CL | 0.38 | 0.94 | † | † | † | † | † | |
| 5 | D019901 | 0.77 | 0.88 | 0.21 | † | † | † | † | |
| T16 | 1 | D0110CL | 0.50 | -0.58 | † | -1.16 | 1.16 | † | † |
| 2 | D011101 | 0.67 | -0.48 | † | -0.76 | 0.76 | † | † | |
| 3 | D011201 | 0.50 | -0.05 | † | † | † | † | † | |
| 4 | D011301 | 0.54 | 0.53 | † | † | † | † | † | |
| 5 | D011401 | 0.56 | 0.86 | † | 1.09 | -1.09 | † | † | |
| 6 | D011501 | 0.45 | 1.08 | † | 1.50 | -1.50 | † | † | |
| T17 | 1 | D0116CL | 0.62 | -1.47 | † | † | † | † | † |
| 3 | D011716 | 0.56 | -0.30 | † | 1.40 | -1.40 | † | † | |
| 4 | D0118CL | 0.51 | -2.16 | † | † | † | † | † | |
| 5 | D0117TL | 0.36 | 0.19 | † | 0.30 | -0.30 | † | † | |
| 6 | D0120CL | 0.74 | -2.72 | † | † | † | † | † | |
| 7 | D0121CL | 0.39 | -2.20 | † | 1.44 | -1.44 | † | † | |
| 8 | D0122CL | 0.82 | -1.28 | † | † | † | † | † | |
| 5 | D0212CL | 0.74 | 1.02 | † | 1.17 | -1.17 | † | † | |
| 6 | D0216CL | 0.27 | 2.12 | † | 1.35 | -1.35 | † | † | |
| T18 | 1 | D0123CL | 0.56 | -1.83 | † | 0.09 | -0.09 | † | † |
| 2 | D012401 | 0.37 | -0.89 | † | 0.40 | -0.40 | † | † | |
| 3 | D0125CL | 0.61 | -0.96 | † | -0.23 | 0.23 | † | † | |
| 4 | D0126CL | 0.39 | -0.73 | † | 0.95 | -1.96 | 1.01 | † | |
| 5 | D012701 | 0.71 | 0.48 | † | 1.47 | -1.47 | † | † | |
| T19 | 1 | D0150CL | 0.41 | -1.36 | † | -0.01 | 0.25 | -0.24 | † |
| 2 | D021101 | 0.82 | -0.47 | † | † | † | † | † | |
| 3 | D021102 | 0.60 | -0.64 | † | † | † | † | † | |
| 4 | D021103 | 0.84 | -0.96 | † | † | † | † | † | |
| 5 | D0225CL | 0.52 | -0.52 | † | † | † | † | † | |
| 6 | D0193CL | 0.46 | -0.26 | † | -0.11 | 0.11 | † | † | |
| T21 | 4 | D019801 | 0.46 | -0.88 | † | † | † | † | † |
| 5 | D019802 | 0.62 | -0.06 | † | † | † | † | † | |
| † Not applicable:
c parameters are not estimated for the two-parameter logistic model or generalized partial credit models, and
d parameters are not estimated for two-parameter or three-parameter 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 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. In 2014, grades 4 and 12 were not assessed. SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), 2014 TEL Assessment. | |||||||||
Last updated 30 August 2021 (ML)
