Table 1.
Statistical results comparing performances of students on the contents followed by sleep (NAP) × waking controls with specific (Control 1) or non-specific (Control 2) interference
| Trials >30′ (72) | All Trials Analysis | Subjects >30′ (21) | Nested Analysis |
|---|---|---|---|
| KS | 0.0000 | KS | 0.0000 |
| Levene | 0.1385 | Levene | 0.9231 |
| KW | 0.0047 | KW | 0.0312 |
| WR Control 1 × NAP | 0.0246 | WR Control 1 × NAP | 0.0435 |
| WR Control 2 × NAP | 0.0013 | WR Control 2 × NAP | 0.0172 |
| Trials <30′ (21) | All Trials Analysis | Subjects <30′ (10) | Nested Analysis |
|---|---|---|---|
| KS | 0.0000 | KS | 0.0000 |
| Levene | 0.7378 | Levene | 0.2742 |
| KW | 0.9197 | KW | 0.6296 |
| WR Control 1 × NAP | 0.8988 | WR Control 1 × NAP | 0.7325 |
| WR Control 2 × NAP | 0.7124 | WR Control 2 × NAP | 0.3631 |
The table shows p values from Kolmogorov–Smirnoff test (KS) and the Levene test. Since the data were not normally distributed, we used the Kruskal–Wallis test (KW) followed by the Wilcoxon Ranksum test for pairwise comparisons (Bonferroni correction for 2 comparisons, α = 0.025). Boldface indicates statistically significant differences. Two analyses were performed: (i) considering all trials (“All Trials Analysis”), and (ii) using the average of all results from the same subject in each condition (“Nested Analysis”). Number of trials/subjects are indicated in parenthesis