Table 2.
Selection of the 12 stimuli from the International Affective Picture System (IAPS) database.
| ID | IAPS Catalog ID | Description | Arousal mean (SD) | Subset α | Subset β | Subset γ |
|---|---|---|---|---|---|---|
| 1 | 7175 | Lamp | 1.72 (±1.26) | A1 | A1 | A1 |
| 2 | 7020 | Fan | 2.17 (±1.71) | A1 | A1 | A1 |
| 3 | 5030 | Flower | 2.74 (±2.13) | A1 | A1 | A1 |
| 4 | 7547 | Bridge | 3.18 (±2.01) | A1 | – | A1 |
| 5 | 7512 | Chess | 3.72 (±2.07) | A1 | – | A2 |
| 6 | 9280 | Smoke | 4.26 (±2.44) | – | – | A2 |
| 7 | 9171 | Fisherman | 4.72 (±2.17) | – | – | A2 |
| 8 | 9582 | Dental Exam | 5.29 (±2.21) | A2 | – | A2 |
| 9 | 9611 | Plane Crash | 5.75 (±2.44) | A2 | – | A3 |
| 10 | 9622 | Jet | 6.26 (±1.98) | A2 | A2 | A3 |
| 11 | 9412 | Dead Man | 6.72 (±2.07) | A2 | A2 | A3 |
| 12 | 3000 | Mutilation | 7.34 (±2.27) | A2 | A2 | A3 |
The arousal ratings are reported for each stimulus, along with the class assigned in the data subsets α, β, and γ.