Table 4.
Multilevel Random Slope Models Testing Within-Person Lagged Effects of Intensity of Previous Day’s Academic Stressors on Current Day’s Salivary Cortisol (nmol/l, over 9 days), Moderated by Implicit Theories of Intelligence (Part 2).
| DV: Current Day’s Cortisol (nmol/l) | ||||||
|---|---|---|---|---|---|---|
| Model IV Academic Stressors Only |
Model V Academic and Social Stressors |
|||||
| IVs: |
B (SE) |
β (SE) |
p |
B (SE) |
β (SE) |
p |
| (Intercept) | 11.31 (1.89) |
<.001*** | 11.23 (1.89) |
< .001*** | ||
| Level 1 (Day) | ||||||
| Intensity of Previous Day’s Academic Stressors (t-1) | −1.05 (0.33) |
−0.12 (0.04) |
.002** | −1.04 (0.34) |
−0.12 (0.04) |
.002** |
| Intensity of Current Day’s Academic Stressors (t) | −0.01 (0.16) |
−0.00 (0.02) |
.948 | −0.02 (0.16) |
−0.00 (0.02) |
.904 |
| Intensity of Previous Day’s Social Stressors (t-1) | 0.17 (0.29) |
0.02 (0.03) |
.550 | |||
| Cross-Level Interaction | ||||||
| Intensity of Previous Day’s Academic Stressors (t-1) × Incremental Theory of Intelligence |
0.44 (0.16) |
0.08 (0.03) |
.005** | 0.45 (0.16) |
0.08 (0.03) |
.005** |
| Intensity of Previous Day’s Academic Stressors (t-1) × Grades Change |
0.22 (0.18) |
0.04 (0.03) |
.218 | 0.22 (0.18) |
0.04 (0.03) |
.226 |
| Intensity of Previous Day’s Social Stressors (t-1) × Incremental Theory of Intelligence |
0.06 (0.14) |
0.01 (0.03) |
.665 | |||
| Intensity of Previous Day’s Social Stressors (t-1) × Grades Change |
−0.02 (0.16) |
−0.00 (0.03) |
.895 | |||
| Level 1 N | 1,941 | 1,941 | ||||
| Level 2 N | 354 | 354 | ||||
| Residual variance | 31.43 | 31.43 | ||||
| Residual standard deviation | 5.61 | 5.61 | ||||
Note: Random slope and intercept models in R estimated within-person associations between the intensity of previous day’s academic stressors and the current day’s cortisol levels, moderated by implicit theories of intelligence. Level 1 (day level) predictors were centered at person-level mean; Incremental theory of intelligence was centered at −1SD from the grand mean. Level 1 and 2 covariates were suppressed (see online supplement for the full model outputs). Degrees of freedom varied due to different patterns of missing data for the various measures. B = unstandardized coefficient.
p < .01
p < .001.