TABLE 5.
Item response analysis of the negative affect scale in the Positive Affect Negative Affect Schedule (N = 1000).
| Coef. | SE | Z | P | 95% CI | ||
| Distressed | ||||||
| Discrimination | 2.66 | 0.15 | 17.57 | 0.00 | 2.36 | 2.96 |
| Difficulty | ||||||
| ≥2 | −0.69 | 0.05 | −12.71 | 0.00 | −0.80 | −0.58 |
| ≥3 | 0.44 | 0.05 | 9.37 | 0.00 | 0.35 | 0.53 |
| ≥4 | 1.03 | 0.06 | 17.62 | 0.00 | 0.91 | 1.14 |
| 5.00 | 1.71 | 0.08 | 20.44 | 0.00 | 1.54 | 1.87 |
| Upset | ||||||
| Discrimination | 2.47 | 0.14 | 17.37 | 0.00 | 2.19 | 2.75 |
| Difficulty | ||||||
| ≥2 | −0.52 | 0.05 | −9.77 | 0.00 | −0.62 | −0.41 |
| ≥3 | 0.55 | 0.05 | 10.99 | 0.00 | 0.45 | 0.64 |
| ≥4 | 1.18 | 0.06 | 18.43 | 0.00 | 1.06 | 1.31 |
| 5.00 | 1.92 | 0.10 | 19.87 | 0.00 | 1.73 | 2.11 |
| Guilty | ||||||
| Discrimination | 2.05 | 0.14 | 14.57 | 0.00 | 1.78 | 2.33 |
| Difficulty | ||||||
| ≥2 | 0.49 | 0.05 | 9.35 | 0.00 | 0.39 | 0.60 |
| ≥3 | 1.42 | 0.08 | 17.34 | 0.00 | 1.26 | 1.58 |
| ≥4 | 1.92 | 0.11 | 17.75 | 0.00 | 1.70 | 2.13 |
| 5.00 | 2.67 | 0.17 | 16.15 | 0.00 | 2.35 | 3.00 |
| Afraid | ||||||
| Discrimination | 3.28 | 0.22 | 14.84 | 0.00 | 2.85 | 3.71 |
| Difficulty | ||||||
| ≥2 | 0.24 | 0.04 | 5.44 | 0.00 | 0.15 | 0.32 |
| ≥3 | 1.00 | 0.05 | 18.38 | 0.00 | 0.89 | 1.11 |
| ≥4 | 1.43 | 0.07 | 20.99 | 0.00 | 1.30 | 1.57 |
| 5.00 | 2.03 | 0.10 | 20.72 | 0.00 | 1.84 | 2.22 |
| Hostile | ||||||
| Discrimination | 1.70 | 0.12 | 14.34 | 0.00 | 1.46 | 1.93 |
| Difficulty | ||||||
| ≥2 | 0.41 | 0.06 | 7.15 | 0.00 | 0.29 | 0.52 |
| ≥3 | 1.41 | 0.09 | 15.88 | 0.00 | 1.23 | 1.58 |
| ≥4 | 2.19 | 0.13 | 16.36 | 0.00 | 1.93 | 2.45 |
| 5.00 | 3.14 | 0.22 | 14.23 | 0.00 | 2.70 | 3.57 |
| Irritable | ||||||
| Discrimination | 1.89 | 0.11 | 16.95 | 0.00 | 1.67 | 2.11 |
| Difficulty | ||||||
| ≥2 | −0.70 | 0.06 | −11.23 | 0.00 | −0.82 | −0.58 |
| ≥3 | 0.53 | 0.06 | 9.67 | 0.00 | 0.43 | 0.64 |
| ≥4 | 1.32 | 0.08 | 17.05 | 0.00 | 1.16 | 1.47 |
| 5.00 | 2.12 | 0.12 | 17.94 | 0.00 | 1.89 | 2.35 |
| Ashamed | ||||||
| Discrimination | 2.29 | 0.16 | 14.77 | 0.00 | 1.99 | 2.60 |
| Difficulty | ||||||
| ≥2 | 0.52 | 0.05 | 10.32 | 0.00 | 0.43 | 0.62 |
| ≥3 | 1.36 | 0.07 | 18.27 | 0.00 | 1.22 | 1.51 |
| ≥4 | 1.88 | 0.10 | 18.89 | 0.00 | 1.68 | 2.07 |
| 5.00 | 2.66 | 0.16 | 16.78 | 0.00 | 2.35 | 2.97 |
| Nervous | ||||||
| Discrimination | 2.47 | 0.15 | 17.01 | 0.00 | 2.19 | 2.76 |
| Difficulty | ||||||
| ≥2 | −0.27 | 0.05 | −5.41 | 0.00 | −0.36 | −0.17 |
| ≥3 | 0.66 | 0.05 | 12.80 | 0.00 | 0.56 | 0.76 |
| ≥4 | 1.29 | 0.07 | 18.98 | 0.00 | 1.16 | 1.42 |
| 5.00 | 1.97 | 0.10 | 19.86 | 0.00 | 1.77 | 2.16 |
| Jittery | ||||||
| Discrimination | 1.53 | 0.11 | 14.21 | 0.00 | 1.32 | 1.74 |
| Difficulty | ||||||
| ≥2 | 0.27 | 0.06 | 4.63 | 0.00 | 0.16 | 0.39 |
| ≥3 | 1.39 | 0.09 | 14.89 | 0.00 | 1.21 | 1.58 |
| ≥4 | 2.01 | 0.13 | 15.75 | 0.00 | 1.76 | 2.26 |
| 5.00 | 3.01 | 0.21 | 14.64 | 0.00 | 2.61 | 3.42 |
| Scared | ||||||
| Discrimination | 3.49 | 0.24 | 14.34 | 0.00 | 3.01 | 3.97 |
| Difficulty | ||||||
| ≥2 | 0.26 | 0.04 | 6.15 | 0.00 | 0.18 | 0.35 |
| ≥3 | 1.14 | 0.06 | 19.95 | 0.00 | 1.03 | 1.25 |
| ≥4 | 1.49 | 0.07 | 21.72 | 0.00 | 1.36 | 1.63 |
| 5.00 | 1.94 | 0.09 | 21.06 | 0.00 | 1.76 | 2.12 |