TABLE 3.
Bivariate correlations between all variables considered in the study for Italian children (n = 55).
| Zero-order correlations |
||||||||||
| 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | |
| 1. Age (in months) | –0.02 | –0.06 | –0.03 | –0.12 | –0.06 | 0.06 | –0.13 | –0.07 | 0.04 | –0.13 |
| 2. STM | – | –0.07 | –0.12 | 0.00 | 0.05 | 0.03 | 0.11 | 0.11 | 0.05 | 0.09 |
| 3. WM | – | – | 0.52*** | 0.60*** | 0.58*** | 0.76*** | 0.61*** | 0.60*** | 0.30* | 0.58*** |
| 4. Inhibitory control | – | – | – | 0.63*** | 0.44*** | 0.51*** | 0.49*** | 0.57*** | 0.68*** | 0.47*** |
| 5. Forward counting (1–10) | – | – | – | – | 0.42** | 0.66*** | 0.39** | 0.91*** | 0.41** | 0.57*** |
| 6. Forward counting (11–50) | – | – | – | – | – | 0.55*** | 0.76*** | 0.51*** | 0.44*** | 0.60*** |
| 7. Backward counting (10–1) | – | – | – | – | – | – | 0.56*** | 0.68*** | 0.52*** | 0.65*** |
| 8. Backward counting (50–11) | – | – | – | – | – | – | – | 0.44*** | 0.50*** | 0.72*** |
| 9. Digit-quantity mapping | – | – | – | – | – | – | – | – | 0.43*** | 0.60*** |
| 10. Digit naming (1–10) | – | – | – | – | – | – | – | – | – | 0.57*** |
| 11. Digit naming (11–16) | – | – | – | – | – | – | – | – | – | – |
* p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001.