Table 4.
Item properties for the R-GPTS
| R-GPTS | a | b1 | b2 | b3 | b4 |
|---|---|---|---|---|---|
| Reference | |||||
| 1. I spent time thinking about friends gossiping about me | 2.65 (0.14) | −0.10 (0.04) | 0.44 (0.04) | 1.17 (0.06) | 1.69 (0.07) |
| 2. I often heard people referring to me. | 2.55 (0.13) | −0.12 (0.04) | 0.53 (0.05) | 1.13 (0.06) | 1.74 (0.08) |
| 3. I have been upset by friends and colleagues judging me critically. | 2.40 (0.13) | −0.17 (0.04) | 0.48 (0.05) | 1.09 (0.06) | 1.67(0.08) |
| 4. People definitely laughed at me behind my back. | 3.69 (0.21) | 0.17 (0.04) | 0.62 (0.04) | 0.97 (0.05) | 1.38 (0.06) |
| 5. I have been thinking a lot about people avoiding me. | 2.47 (0.13) | 0.10 (0.04) | 0.66 (0.05) | 1.26 (0.06) | 1.84 (0.08) |
| 6. People have been dropping hints for me | 2.80 (0.16) | 0.31 (0.04) | 0.83 (0.05) | 1.31 (0.06) | 1.84 (0.08) |
| 7. I believed that certain people were not what they seemed. | 2.10 (0.11) | −0.51 (0.05) | 0.10 (0.05) | 0.73 (0.05) | 1.32 (0.07) |
| 8. People talking about me behind my back upset me | 3.37 (0.18) | −0.07 (0.04) | 0.36 (0.04) | 0.80 (0.05) | 1.22 (0.06) |
| Persecution | |||||
| 1. Certain individuals have had it in for me | 2.95 (0.06) | 0.20 (0.01) | 0.71 (0.02) | 1.28 (0.02) | 1.70 (0.03) |
| 2. People wanted me to feel threatened, so they stared at me. | 2.87 (0.06) | 0.75 (0.02) | 1.14 (0.02) | 1.58 (0.02) | 2.02 (0.03) |
| 3. I was certain people did things in order to annoy me | 2.43 (0.04) | −0.10 (0.02) | 0.46 (0.02) | 1.08 (0.02) | 1.61 (0.03) |
| 4. I was convinced there was a conspiracy against me. | 3.68 (0.08) | 0.79 (0.02) | 1.08 (0.02) | 1.43 (0.02) | 1.75 (0.03) |
| 5. I was sure someone wanted to hurt me | 4.25 (0.10) | 0.78 (0.01) | 1.08 (0.02) | 1.39 (0.02) | 1.68 (0.03) |
| 6. I couldn't stop thinking about people wanting to confuse me | 3.15 (0.07) | 0.65 (0.02) | 1.02 (0.02) | 1.49 (0.02) | 1.89 (0.03) |
| 7. I was distressed by being persecuted | 4.45 (0.10) | 0.77 (0.01) | 1.07 (0.02) | 1.40 (0.02) | 1.75 (0.02) |
| 8. It was difficult to stop thinking about people wanting to make me feel bad | 3.99 (0.08) | 0.40 (0.01) | 0.79 (0.02) | 1.21 (0.02) | 1.59 (0.02) |
| 9. People have been hostile towards me on purpose. | 3.54 (0.07) | 0.35 (0.01) | 0.79 (0.02) | 1.24 (0.02) | 1.63 (0.02) |
| 10. I was angry that someone wanted to hurt me. | 3.59 (0.08) | 0.63 (0.01) | 0.98 (0.02) | 1.35 (0.02) | 1.69 (0.02) |
Note: a = discrimination, b = difficulty parameters at the category thresholds between 0–1 (b1), 1–2 (b2), 2–3 (b3), and 3–4 (b4).