Table 3.
Descriptive statistics and Pearson correlations for all study variables for the total sample.
| M (SD) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |
|---|---|---|---|---|---|---|---|---|
| (1) Boy (%) | 49.1% | |||||||
| (2) Effortful control T1 | 3.54 (0.52) | -0.11∗ | ||||||
| (3) Working memory T1 | 0.47 (0.25) | 0.16∗∗ | -0.09∗ | |||||
| (4) Response inhibition T1 | 0.19 (0.15) | 0.04 | 0.01 | 0.14∗∗ | ||||
| (5) Reward sensitivity T3 | 0.51 (0.13) | -0.01 | -0.11∗ | -0.01 | 0.04 | |||
| (6) QF T3 | 5.92 (7.15) | 0.13∗ | -0.15∗∗ | 0.01 | -0.02 | 0.14∗∗ | ||
| (7) Cannabis use T3 | 1.40 (5.73) | 0.15∗∗ | -0.15∗∗ | 0.08∗ | -0.04 | 0.01 | 0.28∗∗ | |
| (8) Smoking T3 | 1.56 (2.37) | -0.12∗∗ | -0.12∗∗ | -0.01 | -0.04 | 0.08 | 0.48∗∗ | 0.31∗∗ |
QF, quantity by frequency alcohol use; ∗ = p < 0.05, ∗∗ = p < 0.01. Effortful control, higher scores indicate better control; working memory + inhibition, higher scores indicate worse performance/lower control.