Table 4.
F values for the main effects of sleep and interactions with preparation for global and local switch costs separately for the younger and older groups. WASO and TST were analyzed in separate models. Analyses are limited to those justified by a significant main effect or interaction across age groups.1
| Global | Local | |||
|---|---|---|---|---|
| Younger | RT | Accuracy | RT | Accuracy |
| WASO | 15.73*** | 6.68* | -- | -- |
| WASO × Preparation | -- | -- | -- | 0.27 |
| TST | 5.69* | 19.03*** | -- | -- |
| Older | ||||
| WASO | 3.98* | 1.11 | -- | -- |
| WASO × Preparation | -- | -- | -- | 4.91** |
| TST | 3.5† | 0.18 | -- | -- |
1
p < 0.1 †, p < 0.05 *, p < 0.01 **, p < 0.001 ***; -- denotes analysis not justified by significant effect across age groups; Younger WASO/TST df range (1, 134.58–155.91); Younger Preparation df (2, 111.32); Younger WASO × Preparation df (2, 119.06); Older WASO/TST df range (1, 117.55–129.90); Older Preparation df (2, 86.46); Older WASO × Preparation df (2,88.99).