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: Single overall scale. 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), 2010 Civics Assessment. |
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C3 | 1 | P042301 | 1.17 | 0.72 | 0.23 | † | † | † | † | † |
2 | P043901 | 0.79 | 1.09 | 0.38 | † | † | † | † | † | |
3 | P047401 | 0.56 | 0.78 | † | 1.20 | -1.20 | † | † | † | |
4 | P045101 | 0.99 | -1.01 | 0.30 | † | † | † | † | † | |
6 | P042801 | 1.22 | -0.47 | 0.27 | † | † | † | † | † | |
7 | P044101 | 0.82 | 0.24 | 0.23 | † | † | † | † | † | |
8 | P042901 | 0.48 | 0.95 | † | 0.71 | -0.71 | † | † | † | |
9 | P046201 | 1.30 | 1.59 | 0.16 | † | † | † | † | † | |
10 | P043301 | 0.52 | 0.59 | † | 1.61 | -1.61 | † | † | † | |
11 | P046801 | 1.12 | -0.52 | 0.38 | † | † | † | † | † | |
12 | P046601 | 1.79 | 0.04 | 0.24 | † | † | † | † | † | |
13 | P048001 | 0.50 | 1.08 | † | 1.06 | 0.54 | -1.60 | † | † | |
14 | P046501 | 0.85 | -0.94 | 0.34 | † | † | † | † | † | |
15 | P047701 | 0.93 | -0.22 | 0.31 | † | † | † | † | † | |
16 | P047201 | 1.01 | 0.23 | 0.27 | † | † | † | † | † | |
C4 | 1 | P040101 | 0.99 | -0.48 | 0.23 | † | † | † | † | † |
2 | P040102 | 0.44 | -0.45 | † | † | † | † | † | † | |
3 | P040103 | 0.55 | -0.16 | 0.25 | † | † | † | † | † | |
4 | P040104 | 1.29 | 1.05 | 0.20 | † | † | † | † | † | |
5 | P040105 | 0.45 | 0.68 | † | 0.46 | -0.46 | † | † | † | |
6 | P040106 | 0.84 | 0.32 | 0.24 | † | † | † | † | † | |
7 | P040107 | 1.11 | 0.86 | 0.32 | † | † | † | † | † | |
8 | P040108 | 0.73 | -0.17 | 0.25 | † | † | † | † | † | |
9 | P040109 | 0.56 | 1.76 | † | -0.47 | 0.47 | † | † | † | |
10 | P040110 | 0.66 | 2.60 | 0.24 | † | † | † | † | † | |
11 | P040111 | 0.50 | 0.23 | † | 0.04 | -0.04 | † | † | † | |
12 | P040112 | 1.17 | 1.52 | 0.14 | † | † | † | † | † | |
13 | P040113 | 1.03 | 0.57 | 0.21 | † | † | † | † | † | |
14 | P040114 | 1.03 | -0.31 | 0.22 | † | † | † | † | † | |
15 | P040115 | 1.43 | 0.89 | 0.31 | † | † | † | † | † | |
C5 | 1 | P040201 | 1.55 | 0.59 | 0.14 | † | † | † | † | † |
2 | P040202 | 0.54 | -0.31 | 0.23 | † | † | † | † | † | |
3 | P040203 | 0.60 | 1.42 | † | -0.70 | 1.21 | -0.51 | † | † | |
4 | P040204 | 1.02 | -0.72 | 0.27 | † | † | † | † | † | |
5 | P040205 | 1.56 | 0.06 | 0.26 | † | † | † | † | † | |
6 | P040206 | 0.46 | -0.32 | † | 3.13 | -3.13 | † | † | † | |
7 | P040207 | 0.87 | 0.68 | 0.18 | † | † | † | † | † | |
8 | P040208 | 0.73 | 1.78 | 0.21 | † | † | † | † | † | |
9 | P040209 | 0.37 | 1.35 | † | -0.39 | 0.39 | † | † | † | |
10 | P062701 | 0.51 | -2.74 | 0.27 | † | † | † | † | † | |
11 | P062702 | 0.99 | 0.68 | 0.22 | † | † | † | † | † | |
12 | P040212 | 0.58 | 2.65 | 0.20 | † | † | † | † | † | |
13 | P040213 | 1.49 | 0.41 | 0.22 | † | † | † | † | † | |
14 | P040214 | 1.12 | 0.60 | 0.23 | † | † | † | † | † | |
15 | P040215 | 1.13 | 0.26 | 0.25 | † | † | † | † | † | |
C6 | 1 | P042120 | 0.63 | -1.03 | 0.32 | † | † | † | † | † |
2 | P042121 | 1.25 | -0.28 | 0.25 | † | † | † | † | † | |
3 | P042122 | 0.70 | -0.28 | † | 0.77 | -0.77 | † | † | † | |
5 | P042124 | 1.30 | 1.18 | 0.27 | † | † | † | † | † | |
6 | P042125 | 0.43 | -2.18 | † | 0.19 | -0.19 | † | † | † | |
7 | P042126 | 0.74 | -0.89 | 0.25 | † | † | † | † | † | |
8 | P042127 | 1.38 | 1.04 | 0.26 | † | † | † | † | † | |
9 | P042128 | 0.74 | 0.00 | 0.23 | † | † | † | † | † | |
10 | P042129 | 0.33 | 0.08 | † | † | † | † | † | † | |
11 | P042130 | 0.58 | 0.24 | 0.28 | † | † | † | † | † | |
12 | P042131 | 0.65 | 0.31 | 0.24 | † | † | † | † | † | |
13 | P042132 | 0.57 | 1.29 | † | 1.16 | -1.16 | † | † | † | |
14 | P042133 | 0.93 | 1.09 | 0.25 | † | † | † | † | † | |
15 | P042134 | 0.60 | 0.41 | 0.21 | † | † | † | † | † | |
C7 | 1 | P042135 | 0.83 | -1.11 | 0.28 | † | † | † | † | † |
2 | P042136 | 0.68 | 0.25 | † | 0.28 | -0.28 | † | † | † | |
3 | P042137 | 0.89 | -0.41 | 0.30 | † | † | † | † | † | |
4 | P042138 | 0.85 | 1.16 | 0.38 | † | † | † | † | † | |
5 | P042139 | 0.88 | 1.30 | 0.25 | † | † | † | † | † | |
6 | P042140 | 0.45 | 0.32 | † | 0.04 | 1.02 | -1.06 | † | † | |
7 | P042141 | 1.23 | 1.07 | 0.16 | † | † | † | † | † | |
8 | P042142 | 0.84 | 0.16 | 0.21 | † | † | † | † | † | |
9 | P042143 | 0.60 | 0.40 | † | 0.92 | 0.24 | -1.16 | † | † | |
10 | P042144 | 0.60 | 0.70 | 0.31 | † | † | † | † | † | |
11 | P042145 | 1.16 | -0.59 | 0.31 | † | † | † | † | † | |
12 | P042146 | 0.98 | 1.37 | 0.12 | † | † | † | † | † | |
13 | P042147 | 0.29 | 1.14 | † | -3.00 | 3.00 | † | † | † | |
14 | P042148 | 0.96 | -0.04 | 0.22 | † | † | † | † | † | |
15 | P042149 | 1.08 | -0.63 | 0.20 | † | † | † | † | † | |
C8 | 1 | P046101 | 1.49 | 0.25 | 0.27 | † | † | † | † | † |
2 | P045601 | 0.59 | -2.25 | 0.30 | † | † | † | † | † | |
3 | P045501 | 0.46 | -0.72 | † | 1.08 | -1.08 | † | † | † | |
4 | P045701 | 0.51 | 1.63 | 0.26 | † | † | † | † | † | |
5 | P043001 | 0.44 | 0.14 | 0.24 | † | † | † | † | † | |
6 | P044401 | 0.96 | 0.66 | 0.25 | † | † | † | † | † | |
7 | P044801 | 0.45 | 1.20 | † | 0.41 | 0.17 | -0.58 | † | † | |
8 | P044601 | 0.64 | -0.02 | 0.25 | † | † | † | † | † | |
9 | P047101 | 0.86 | -0.61 | 0.27 | † | † | † | † | † | |
10 | P047301 | 0.47 | 0.82 | 0.26 | † | † | † | † | † | |
11 | P044301 | 0.60 | -1.61 | † | 0.76 | -0.76 | † | † | † | |
12 | P044201 | 0.57 | -0.17 | 0.25 | † | † | † | † | † | |
13 | P047501 | 1.63 | 1.43 | 0.30 | † | † | † | † | † | |
14 | P043501 | 1.17 | 1.39 | 0.31 | † | † | † | † | † | |
15 | P048101 | 1.11 | -0.29 | 0.27 | † | † | † | † | † |