Table 1.
Means, standard deviations, and correlations of variables.
| Variable | M | SD | 1-ICCd | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (1) Day-specific bedtime procrastination | 2.68 | 1.09 | 0.75 | 0.17** | 0.01 | 0.00 | |||||
| (2) Momentary self-regulatory resources before going to bed | 3.35 | 0.98 | 0.51 | –0.12 | –0.25*** | 0.01 | |||||
| (3) Day-specific unfinished tasks in the evening | 2.25 | 0.95 | 0.55 | 0.23* | –0.36*** | –0.03 | |||||
| (4) Time (day of the work week)a | 1.51 | 1.09 | – | –0.06 | 0.18 | –0.10 | |||||
| (5) Chronotype | 3.94 | 1.00 | – | 0.18 | –0.16 | –0.26* | 0.05 | ||||
| (6) Trait self-control | 3.41 | 0.57 | – | –0.11 | 0.27** | –0.41*** | 0.10 | –0.22* | |||
| (7) Age | 40.54 | 9.61 | – | –0.19* | 0.37*** | –0.10 | –0.03 | –0.37*** | 0.19 | ||
| (8) Genderb | 0.46 | 0.50 | – | –0.05 | –0.21* | 0.02 | 0.07 | –0.01 | –0.05 | –0.27** | |
| (9) Leadership positionc | 0.40 | 0.49 | – | –0.01 | 0.38** | –0.07 | 0.04 | –0.11 | 0.18 | 0.21* | –0.34*** |
a0 = Monday, 1 = Tuesday, 2 = Wednesday, 3 = Thursday. Correlations below the diagonal are person-level correlations. To calculate these person-level correlations, day-level data below the diagonal were averaged across days (N = 108). Correlations above the diagonal are day-level correlations (N = 399). Above the diagonal, variables 1, 2, and 3 were centered around the respective person-mean. bGender: 1 = female, 0 = male. cLeadership position: 1 = yes, 0 = no.dIntraclass correlation (ICC) = ratio of the between-person variance to the total variance, 1-ICC = ratio of the within-person variance to the total variance. ∗p < 0.05, ∗∗p < 0.01, ∗∗∗p < 0.001.