Table 1.
Descriptive Statistics and Correlations for Key Variables in Study 1.
| Variable | Mean | SD | Correlations | |||
|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||
| 1 | Externalizing behaviors | 6.20 | 5.38 | |||
| 2 | Callous-unemotional traits | 6.01 | 2.93 | 0.22*** | ||
| 3 | Self-reported sleep quality | 5.70 | 3.01 | 0.32*** | 0.04 | |
| 4 | Anxiety symptoms | 25.07 | 14.88 | 0.27*** | −0.04 | 0.40*** |
SD = standard deviation.
Externalizing behaviors (adult self-report) possible range = 0–50. Higher score = higher externalizing behaviors.
Callous-unemotional traits (inventory of callous-unemotional traits) possible range = 0–33. Higher score = higher callous-unemotional traits.
Self-reported sleep quality (Pittsburgh Sleep Quality Index) possible range = 0–21. Higher score = poorer sleep.
Anxiety symptoms (revised symptoms of anxiety scale) possible range = 0–108. Higher score = more anxiety symptoms.
***p < .001.