Table of Contents | Search Technical Documentation | References
Block | Item | NAEP ID | aj | bj | cj | dj1 | dj2 | dj3 |
---|---|---|---|---|---|---|---|---|
† 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 describes 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 Civics Assessment. |
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P3 | 1 | P042169 | 0.80 | -1.04 | 0.25 | † | † | † |
2 | P042170 | 0.53 | -0.47 | 0.23 | † | † | † | |
3 | P042171 | 0.58 | -0.54 | † | 0.77 | -0.77 | † | |
4 | P042172 | 0.49 | 1.46 | 0.21 | † | † | † | |
5 | P042173 | 0.76 | 1.01 | 0.34 | † | † | † | |
6 | P042174 | 0.93 | 1.80 | † | 0.60 | -0.60 | † | |
7 | P042175 | 0.44 | -1.44 | 0.26 | † | † | † | |
8 | P042176 | 0.52 | 0.89 | 0.33 | † | † | † | |
9 | P042177 | 0.42 | -0.62 | † | 0.06 | -0.06 | † | |
10 | P042178 | 1.68 | 0.91 | 0.29 | † | † | † | |
11 | P042179 | 1.90 | 1.03 | 0.23 | † | † | † | |
12 | P042180 | 0.64 | 0.75 | 0.27 | † | † | † | |
13 | P042181 | 0.51 | 0.95 | † | 0.85 | -0.85 | † | |
14 | P042182 | 0.60 | -2.33 | 0.28 | † | † | † | |
15 | P042183 | 1.51 | 0.81 | 0.36 | † | † | † | |
16 | P042184 | 0.54 | 0.46 | † | † | † | † | |
17 | P042185 | 0.82 | 1.06 | 0.30 | † | † | † | |
18 | P042186 | 1.35 | -1.07 | 0.27 | † | † | † | |
19 | P042187 | 0.97 | 0.78 | 0.17 | † | † | † | |
20 | P042188 | 1.21 | 0.36 | 0.40 | † | † | † | |
P4 | 1 | P040801 | 1.47 | 0.10 | 0.27 | † | † | † |
2 | P040802 | 1.89 | 0.28 | 0.23 | † | † | † | |
3 | P040803 | 0.61 | 0.39 | † | 0.48 | -0.48 | † | |
4 | P040804 | 0.57 | -1.59 | 0.30 | † | † | † | |
5 | P040805 | 1.36 | 1.03 | 0.21 | † | † | † | |
6 | P040806 | 1.64 | 1.07 | 0.11 | † | † | † | |
7 | P040807 | 0.42 | 0.90 | † | 1.33 | -0.55 | -0.78 | |
8 | P040808 | 0.65 | 2.97 | 0.16 | † | † | † | |
9 | P040809 | 1.41 | 1.01 | 0.23 | † | † | † | |
10 | P040810 | 1.16 | 0.26 | 0.24 | † | † | † | |
11 | P040811 | 1.38 | 0.85 | 0.23 | † | † | † | |
12 | P040812 | 0.97 | 1.15 | 0.30 | † | † | † | |
13 | P040813 | 0.70 | 1.47 | † | 0.55 | 0.00 | -0.54 | |
14 | P040814 | 1.51 | 1.17 | 0.10 | † | † | † | |
15 | P040815 | 1.49 | 0.96 | 0.16 | † | † | † | |
16 | P040816 | 0.81 | 0.87 | 0.16 | † | † | † | |
17 | P040817 | 1.16 | -0.20 | 0.30 | † | † | † | |
18 | P040818 | 1.60 | 0.45 | 0.27 | † | † | † | |
19 | P040819 | 1.70 | 0.89 | 0.23 | † | † | † | |
P5 | 1 | P040901 | 0.68 | -1.20 | 0.32 | † | † | † |
2 | P040902 | 1.04 | 1.13 | 0.13 | † | † | † | |
3 | P040903 | 0.46 | 0.60 | † | 0.46 | -0.46 | † | |
4 | P040904 | 0.80 | 0.49 | 0.12 | † | † | † | |
6 | P040906 | 0.72 | 1.39 | † | -0.38 | 0.38 | † | |
7 | P040907 | 0.70 | 0.93 | 0.19 | † | † | † | |
8 | P040908 | 0.88 | -0.12 | 0.18 | † | † | † | |
9 | P040909 | 1.48 | -0.21 | 0.25 | † | † | † | |
10 | P040910 | 0.56 | 1.41 | † | 1.19 | -1.19 | † | |
11 | P040911 | 0.29 | 1.45 | 0.23 | † | † | † | |
12 | P040912 | 1.85 | 1.51 | 0.24 | † | † | † | |
13 | P040913 | 0.88 | 0.53 | † | 0.50 | -0.50 | † | |
14 | P040914 | 0.98 | 0.52 | 0.17 | † | † | † | |
15 | P040915 | 1.94 | 1.44 | 0.28 | † | † | † | |
16 | P040916 | 1.42 | 1.15 | 0.25 | † | † | † | |
17 | P040917 | 0.75 | 0.90 | 0.13 | † | † | † | |
18 | P040918 | 0.99 | 0.04 | 0.29 | † | † | † | |
19 | P040919 | 1.10 | 0.45 | 0.20 | † | † | † | |
P6 | 1 | P041001 | 0.80 | 0.23 | 0.32 | † | † | † |
2 | P041002 | 0.71 | 1.15 | 0.35 | † | † | † | |
3 | P041003 | 0.96 | 1.09 | † | † | † | † | |
4 | P041004 | 1.03 | -0.65 | 0.36 | † | † | † | |
5 | P041005 | 0.95 | 0.06 | 0.15 | † | † | † | |
6 | P041006 | 1.80 | 0.96 | 0.39 | † | † | † | |
7 | P041007 | 0.82 | 0.91 | † | 0.22 | -0.22 | † | |
8 | P041008 | 0.74 | -0.14 | 0.19 | † | † | † | |
9 | P041009 | 0.97 | 0.24 | 0.22 | † | † | † | |
10 | P041010 | 0.66 | 1.27 | 0.22 | † | † | † | |
11 | P041011 | 1.23 | 0.21 | 0.32 | † | † | † | |
12 | P041012 | 1.34 | -0.08 | 0.24 | † | † | † | |
13 | P041013 | 0.30 | 0.85 | † | 2.09 | -2.09 | † | |
14 | P041014 | 0.30 | 0.90 | † | † | † | † | |
15 | P041015 | 1.30 | 0.51 | 0.19 | † | † | † | |
16 | P041016 | 1.35 | 0.68 | 0.22 | † | † | † | |
17 | P041017 | 1.68 | 0.78 | 0.32 | † | † | † | |
18 | P041018 | 1.10 | -0.09 | 0.29 | † | † | † | |
19 | P041019 | 0.57 | 0.84 | 0.23 | † | † | † | |
P7 | 1 | P041101 | 0.38 | -0.92 | 0.29 | † | † | † |
2 | P041102 | 0.61 | 0.94 | † | 0.19 | -0.19 | † | |
3 | P041103 | 1.05 | 0.48 | 0.17 | † | † | † | |
4 | P041104 | 1.25 | 1.31 | 0.24 | † | † | † | |
5 | P041105 | 1.14 | 1.21 | 0.28 | † | † | † | |
6 | P041106 | 0.38 | 1.67 | † | 2.41 | -2.41 | † | |
7 | P041107 | 1.34 | 0.17 | 0.41 | † | † | † | |
8 | P041108 | 1.09 | -0.08 | 0.27 | † | † | † | |
9 | P041109 | 2.45 | 2.02 | 0.26 | † | † | † | |
10 | P041110 | 1.07 | 1.28 | 0.25 | † | † | † | |
11 | P041111 | 0.88 | 1.02 | † | -0.15 | 0.15 | † | |
12 | P041112 | 0.47 | -0.81 | 0.36 | † | † | † | |
13 | P041113 | 0.96 | 0.71 | 0.39 | † | † | † | |
14 | P041114 | 1.55 | 1.99 | 0.15 | † | † | † | |
15 | P041115 | 1.12 | 1.38 | 0.25 | † | † | † | |
16 | P041116 | 0.90 | 1.12 | † | 0.29 | -0.29 | † | |
17 | P041117 | 0.98 | -0.88 | 0.36 | † | † | † | |
18 | P041118 | 1.60 | 1.28 | 0.26 | † | † | † | |
19 | P041119 | 0.97 | 0.21 | 0.30 | † | † | † | |
P8 | 1 | P041201 | 0.69 | 0.09 | 0.24 | † | † | † |
2 | P041202 | 0.84 | -0.21 | † | † | † | † | |
3 | P041203 | 0.42 | -2.28 | 0.26 | † | † | † | |
5 | P041205 | 0.24 | -2.19 | † | -0.67 | 0.67 | † | |
6 | P041206 | 0.95 | 0.05 | 0.20 | † | † | † | |
7 | P041207 | 1.00 | 0.67 | 0.33 | † | † | † | |
8 | P041208 | 0.79 | 0.24 | 0.24 | † | † | † | |
9 | P041209 | 1.24 | 0.73 | 0.29 | † | † | † | |
10 | P041210 | 0.50 | 0.27 | 0.24 | † | † | † | |
11 | P041211 | 0.98 | 1.22 | 0.24 | † | † | † | |
12 | P041212 | 0.85 | 0.25 | 0.30 | † | † | † | |
13 | P041213 | 0.57 | 1.34 | † | 0.55 | 0.48 | -1.03 | |
14 | P041214 | 1.82 | 1.38 | 0.34 | † | † | † | |
15 | P041215 | 1.08 | -0.37 | 0.23 | † | † | † | |
16 | P041216 | 1.77 | 0.73 | 0.20 | † | † | † | |
17 | P041217 | 0.46 | 1.85 | 0.23 | † | † | † | |
18 | P041218 | 1.81 | 0.65 | 0.34 | † | † | † | |
19 | P041219 | 0.99 | -0.55 | 0.23 | † | † | † | |
P9 | 1 | P041301 | 0.91 | 0.57 | 0.40 | † | † | † |
2 | P041302 | 1.18 | 0.47 | 0.24 | † | † | † | |
3 | P041303 | 1.51 | 0.21 | 0.29 | † | † | † | |
4 | P041304 | 1.63 | -0.29 | 0.37 | † | † | † | |
5 | P041305 | 0.95 | 0.73 | 0.37 | † | † | † | |
6 | P041306 | 1.14 | -0.74 | 0.26 | † | † | † | |
7 | P041307 | 0.83 | 0.99 | † | 0.88 | -0.63 | -0.25 | |
8 | P041308 | 1.76 | 1.56 | 0.20 | † | † | † | |
9 | P041309 | 0.45 | 0.99 | † | 0.48 | -0.48 | † | |
10 | P041310 | 1.87 | 0.82 | 0.31 | † | † | † | |
11 | P041311 | 0.34 | 1.61 | 0.32 | † | † | † | |
12 | P041312 | 1.13 | 1.43 | 0.18 | † | † | † | |
13 | P041313 | 1.01 | -1.07 | 0.34 | † | † | † | |
14 | P041314 | 1.27 | 0.89 | 0.23 | † | † | † | |
15 | P041315 | 0.57 | -0.07 | † | 0.61 | -0.61 | † | |
16 | P041316 | 1.13 | 0.73 | 0.29 | † | † | † | |
17 | P041317 | 1.36 | 0.85 | 0.16 | † | † | † | |
18 | P041318 | 0.92 | 0.59 | 0.31 | † | † | † | |
19 | P041319 | 0.74 | 0.64 | 0.29 | † | † | † | |
P10 | 1 | P042150 | 0.72 | -1.05 | 0.29 | † | † | † |
2 | P042151 | 1.26 | 0.37 | 0.23 | † | † | † | |
3 | P042152 | 0.72 | 0.40 | † | 0.58 | -0.58 | † | |
4 | P042153 | 1.52 | 0.80 | 0.33 | † | † | † | |
5 | P042154 | 1.23 | -0.05 | 0.24 | † | † | † | |
6 | P042155 | 0.63 | -0.78 | † | 0.13 | -0.13 | † | |
7 | P042156 | 1.82 | 0.41 | 0.21 | † | † | † | |
8 | P042157 | 1.35 | 0.04 | 0.22 | † | † | † | |
9 | P042158 | 0.45 | 0.29 | † | 1.33 | -1.33 | † | |
10 | P042159 | 1.20 | 0.68 | 0.28 | † | † | † | |
11 | P042160 | 1.48 | 0.99 | 0.27 | † | † | † | |
12 | P042161 | 1.74 | 0.11 | 0.23 | † | † | † | |
13 | P042162 | 1.01 | 1.00 | † | 0.31 | -0.31 | † | |
14 | P042163 | 1.52 | 0.88 | 0.23 | † | † | † | |
15 | P042164 | 0.99 | 1.77 | 0.20 | † | † | † | |
16 | P042165 | 1.49 | 0.22 | 0.16 | † | † | † | |
17 | P042166 | 1.19 | 0.49 | 0.39 | † | † | † | |
18 | P042167 | 0.86 | -1.28 | 0.28 | † | † | † | |
19 | P042168 | 1.40 | 0.40 | 0.36 | † | † | † |