Table of Contents | Search Technical Documentation | References
Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 | dj4 | dj5 |
---|---|---|---|---|---|---|---|---|---|---|
† Not applicable; c parameters are not estimated for 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 exactly zero 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), 2006 Economics Assessment. |
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EA | 1 | E000001 | 1.36 | 1.08 | 0.23 | † | † | † | † | † |
2 | E000101 | 2.41 | 1.43 | 0.17 | † | † | † | † | † | |
4 | E000301 | 0.59 | 0.26 | † | -0.18 | 0.18 | † | † | † | |
6 | E000501 | 2.34 | 0.44 | 0.25 | † | † | † | † | † | |
8 | E000701 | 0.60 | 1.13 | † | 0.74 | -0.74 | † | † | † | |
11 | E001001 | 1.64 | 1.21 | 0.31 | † | † | † | † | † | |
13 | E001201 | 1.14 | -0.47 | 0.34 | † | † | † | † | † | |
14 | E001301 | 0.92 | 0.61 | 0.30 | † | † | † | † | † | |
EB | 9 | E002501 | 0.37 | 0.85 | † | 0.74 | -0.12 | -0.62 | † | † |
14 | E003001 | 1.44 | 0.79 | 0.28 | † | † | † | † | † | |
15 | E003101 | 1.10 | 0.90 | 0.26 | † | † | † | † | † | |
16 | E003201 | 1.35 | 1.15 | 0.26 | † | † | † | † | † | |
17 | E003301 | 0.33 | 1.31 | 0.20 | † | † | † | † | † | |
18 | E003401 | 1.18 | -0.40 | 0.29 | † | † | † | † | † | |
EC | 2 | E003601 | 1.44 | -0.48 | 0.26 | † | † | † | † | † |
4 | E003801 | 1.29 | 0.43 | 0.25 | † | † | † | † | † | |
7 | E004101 | 0.33 | -0.63 | 0.26 | † | † | † | † | † | |
9 | E004301 | 0.50 | -1.68 | 0.23 | † | † | † | † | † | |
12 | E004601 | 0.48 | 1.55 | † | 1.04 | -1.04 | † | † | † | |
13 | E004701 | 0.53 | 2.48 | 0.32 | † | † | † | † | † | |
15 | E004901 | 0.84 | 0.64 | 0.16 | † | † | † | † | † | |
16 | E005001 | 1.43 | 0.26 | 0.29 | † | † | † | † | † | |
19 | E005301 | 0.49 | 0.02 | 0.23 | † | † | † | † | † | |
ED | 5 | E005801 | 1.52 | 0.53 | 0.26 | † | † | † | † | † |
7 | E006001 | 1.28 | 0.94 | 0.24 | † | † | † | † | † | |
8 | E006101 | 2.58 | 0.30 | 0.31 | † | † | † | † | † | |
10 | E006301 | 0.86 | -1.76 | 0.28 | † | † | † | † | † | |
12 | E006501 | 1.49 | 1.19 | 0.15 | † | † | † | † | † | |
13 | E006601 | 0.89 | 0.94 | † | 0.33 | -0.33 | † | † | † | |
16 | E006901 | 0.93 | 1.06 | 0.31 | † | † | † | † | † | |
EE | 1 | E007201 | 0.91 | -0.14 | 0.34 | † | † | † | † | † |
2 | E007301 | 0.86 | -0.23 | 0.22 | † | † | † | † | † | |
4 | E007501 | 0.74 | 1.89 | † | 1.83 | 0.54 | -2.37 | † | † | |
8 | E007901 | 0.58 | 1.10 | 0.23 | † | † | † | † | † | |
11 | E008201 | 0.94 | 0.06 | 0.19 | † | † | † | † | † | |
14 | E008501 | 2.43 | 1.82 | 0.22 | † | † | † | † | † | |
15 | E008601 | 0.98 | 0.00 | 0.27 | † | † | † | † | † | |
19 | E009001 | 0.89 | 0.79 | 0.32 | † | † | † | † | † | |
EF | 3 | E009501 | 0.71 | -0.93 | 0.22 | † | † | † | † | † |
6 | E009801 | 1.80 | 1.86 | 0.30 | † | † | † | † | † | |
9 | E010101 | 0.96 | 0.29 | 0.23 | † | † | † | † | † | |
10 | E010201 | 0.45 | 1.90 | † | 1.31 | 0.69 | -0.71 | -1 | † | |
18 | E011001 | 0.95 | 1.06 | 0.31 | † | † | † | † | † | |
EG | 3 | E011301 | 1.45 | 1.36 | 0.29 | † | † | † | † | † |
4 | E011401 | 0.59 | -1.00 | † | 0.44 | -0.44 | † | † | † | |
6 | E011601 | 1.04 | 0.57 | 0.27 | † | † | † | † | † | |
7 | E011701 | 1.31 | 0.13 | 0.21 | † | † | † | † | † | |
8 | E011801 | 0.37 | -0.63 | 0.25 | † | † | † | † | † | |
10 | E012001 | 1.37 | 0.80 | 0.19 | † | † | † | † | † | |
11 | E012101 | 0.33 | -0.65 | 0.26 | † | † | † | † | † | |
13 | E012301 | 0.41 | 1.54 | † | 0.62 | -0.62 | † | † | † | |
EH | 4 | E013201 | 0.59 | -0.05 | † | -2.18 | 2.05 | 0.13 | † | † |
5 | E013301 | 0.71 | 0.78 | 0.33 | † | † | † | † | † | |
6 | E013401 | 0.98 | 1.40 | 0.21 | † | † | † | † | † | |
7 | E013501 | 1.52 | 0.43 | 0.31 | † | † | † | † | † | |
8 | E013601 | 1.57 | 1.46 | 0.18 | † | † | † | † | † | |
9 | E013701 | 1.63 | 1.74 | † | 0.58 | -0.58 | † | † | † | |
18 | E014601 | 1.44 | 0.71 | 0.16 | † | † | † | † | † | |
19 | E014701 | 2.61 | 1.32 | 0.14 | † | † | † | † | † | |
EI | 3 | E015101 | 1.88 | 1.32 | 0.25 | † | † | † | † | † |
6 | E015401 | 1.08 | 2.32 | 0.34 | † | † | † | † | † | |
8 | E015601 | 0.88 | 0.94 | 0.20 | † | † | † | † | † | |
9 | E015701 | 1.42 | 0.49 | † | † | † | † | † | † | |
12 | E016001 | 2.50 | 0.31 | 0.28 | † | † | † | † | † | |
16 | E016401 | 0.98 | 0.59 | 0.34 | † | † | † | † | † | |
EJ | 2 | E017001 | 1.27 | 0.80 | 0.25 | † | † | † | † | † |
3 | E017101 | 0.70 | 0.97 | 0.34 | † | † | † | † | † | |
5 | E017301 | 0.87 | 1.35 | 0.30 | † | † | † | † | † | |
6 | E017401 | 0.33 | 2.48 | 0.35 | † | † | † | † | † | |
13 | E018101 | 0.58 | 0.54 | † | 0.35 | -0.35 | † | † | † | |
14 | E018201 | 1.69 | 1.51 | 0.16 | † | † | † | † | † | |
15 | E018301 | 0.82 | 2.10 | 0.36 | † | † | † | † | † |