Table 1.
Means, SDs, Intraclass Correlations (ICC), and Correlations for Primary Study Variables
| Variable | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1. Exploration (T1) | 1 | |||||||||||||||||
| 2. Commitment (T1) | .68*** | 1 | ||||||||||||||||
| 3. Self-Esteem (T1) | .06 | .19** | 1 | |||||||||||||||
| 4. Positive Mood (T1) | .16* | .27*** | .50*** | 1 | ||||||||||||||
| 5. Negative Mood (T1) | .02 | −.05 | −.64*** | −.32*** | 1 | |||||||||||||
| 6. Anxious Mood (T1) | .06 | −.04 | −.48*** | −.14* | .64*** | 1 | ||||||||||||
| 7. Dep. Symptoms (T1) | .00 | −.09 | −.71*** | −.46*** | .80*** | .58*** | 1 | |||||||||||
| 8. Self-Esteem (T2) | .04 | .22*** | .66*** | .43 | −.44*** | −.39*** | −.53*** | 1 | ||||||||||
| 9. Positive Mood (T2) | .09 | .20*** | .32*** | .46*** | −.21** | −.16* | −.28*** | .48*** | 1 | |||||||||
| 10. Negative Mood (T2) | −.02 | −.11 | −.43*** | −.30*** | .57*** | .42*** | .58*** | −.50*** | −.09 | 1 | ||||||||
| 11. Anxious Mood (T2) | −.03 | −.10 | −.39*** | −.28*** | .45*** | .49*** | .48*** | −.43*** | −.01 | .79*** | 1 | |||||||
| 12. Dep. Symptoms (T2) | −.04 | −.16* | −.47*** | −.34*** | .51*** | .38*** | .59*** | −.61*** | −.28*** | .80*** | .67*** | 1 | ||||||
| 13. Discrimination (D) | −.11 | −.25*** | −.16* | −.19** | .17** | .16* | .22* | −.23*** | −.12 | .31*** | .22** | .35*** | 1 | |||||
| 14. Sleep Latency (D) | .01 | .00 | −.15* | −.06 | .15** | .17** | .16* | −.14* | −.15* | .15* | .10 | .19** | .04 | 1 | ||||
| 15. Sleep Efficiency (D) | −.07 | −.10 | −.09 | −.10 | .20** | .14* | .20** | −.14* | −.05 | .23*** | .15* | .25*** | .04* | −.01 | 1 | |||
| 16. Sleep Disturb. (D) | .06 | −.02 | −.15* | −.10 | .16* | .18** | .20** | −.11 | −.12 | .24*** | .21** | .35*** | .08*** | .39*** | .03 | 1 | ||
| 17. Daytime Dysfun. (D) | −.01 | −.04 | −.27*** | −.26*** | .20** | .27*** | .17** | −.26*** | −.25*** | .29*** | .35*** | .30*** | .02 | .26*** | −.06* | .30*** | 1 | |
| 18. Sleep Duration (D) | .07 | .12 | .16* | .15* | −.24*** | −.20** | −.27*** | .24*** | .00 | −.37*** | −.34*** | −.33*** | −.05** | −.12*** | −.02 | −.06** | −.18*** | 1 |
| M | 2.65 | 3.01 | 3.54 | 3.36 | 2.05 | 2.52 | 2.21 | 3.40 | 3.20 | 1.86 | 2.15 | 2.18 | .09 | .45 | .90 | .42 | .41 | 1.97 |
| SD | .56 | .51 | .73 | .94 | .97 | .89 | .63 | .70 | .98 | .98 | .99 | .65 | .20 | .58 | .84 | .46 | .54 | .96 |
| ICC (Adolescent Level) | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | .50 | .36 | .30 | .31 | .29 | .39 |
| ICC (School Level) | .02 | .02 | .00 | .10 | .03 | .00 | .02 | .00 | .00 | .00 | .02 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| N | 258 | 257 | 258 | 260 | 259 | 260 | 259 | 243 | 246 | 246 | 246 | 248 | 2750 | 3696 | 2757 | 3696 | 3696 | 2772 |
Note.
*
p < .05.
**
p < .01.
***
p < .001. N/A = not available. T1 = Time 1. T2 = Time 2. D = Daily Assessment. The SDs and correlations of discrimination and sleep were assessed at the daily level.