Table 2 Descriptive statistics, item-total correlations, ICC’s
| Â | M | SD | Skew | Kurtosis | Item-total score r | ICCb |
|---|---|---|---|---|---|---|
Anhedonia | ||||||
 1. Intensity of pleasure during activities | 2.3 | 1.6 | 0.1 | -0.9 | 0.80** |  |
 2. Frequency of pleasurable activities | 2.5 | 1.6 | 0.0 | -0.8 | 0.78** |  |
 3. Intensity of future pleasure | 2.1 | 1.5 | 0.4 | -0.3 | 0.69** | 0.88 |
 Subscale total | 7.1 | 4.4 | 0.1 | -0.6 |  |  |
Distress subscale | ||||||
 4. Lack of normal distress | 1.0 | 1.4 | 1.3a | 0.7 | 0.51** | 0.93 |
Asociality subscale | ||||||
 5. Asociality behavior | 2.6 | 1.4 | 0.1 | -0.3 | 0.70** |  |
 6. Asociality inner-experience | 2.0 | 1.4 | 0.6 | -0.3 | 0.71** |  |
 Subscale total | 4.6 | 2.6 | 0.4 | -0.3 |  | 0.95 |
Avolition subscale | ||||||
 7. Avolition behavior | 2.5 | 1.3 | 0.0 | -0.6 | 0.74** |  |
 8. Avolition inner-experience | 2.1 | 1.5 | 0.2 | -0.7 | 0.79** |  |
 Subscale total | 4.7 | 2.7 | 0.2 | -0.5 |  | 0.87 |
Blunted affect subscale | ||||||
 9. Facial expression | 2.2 | 1.6 | 0.6 | -0.4 | 0.85** |  |
 10. Vocal expression | 2.0 | 1.7 | 0.6 | -0.5 | 0.81** |  |
 11. Expressive gestures | 2.1 | 1.7 | 0.4 | -1.0 | 0.78** |  |
 Subscale total | 6.3 | 4.7 | 0.6 | -0.5 |  | 0.95 |
Alogia subscale | ||||||
 12. Quantity of speech | 1.3 | 1.5 | 1.1a | 0.9 | 0.72** |  |
 13. Spontaneous elaboration | 1.5 | 1.7 | 0.9 | 0.0 | 0.75** |  |
 Subscale total | 2.7 | 3.1 | 1.0 | 0.1 |  | 0.97 |
 BNSS total score | 26.3 | 14.7 | 0.7 | 0.1 |  | 0.97 |