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Table 1 Slope, location and chi-square tests for the negative affect scale

From: An application of item response theory to psychological test development

Items Slope (a) Location (b) χ 2 df p
1 0.80 -0.62 62.09 61 0.44
2 0.56 -1.14 71.54 65 0.27
3 0.63 -0.73 101.35 62 0.01
4 0.40 0.87 93.87 85 0.24
5 0.62 -0.12 76.99 74 0.38
6 0.70 1.48 85.44 69 0.09
7 0.79 0.10 80.35 74 0.29
8 1.19 0.21 79.65 65 0.10
9 0.56 2.09 93.22 70 0.03
10 0.64 1.23 84.98 76 0.22