Table 4. Unstandardized Estimates (and Standard Errors) of Multilevel Models Predicting Anxiety or Distraction.
| N-back | Memory updating | |||
|---|---|---|---|---|
| Fixed Effects | Anxiety | Distraction | Anxiety | Distraction |
| Intercept, γ00 | 1.18***(.07) | 1.15***(.08) | 1.44***(.07) | 1.21***(.08) |
| Age, γ01 | .0002 (.003) | −.01** (.003) | .002 (.003) | −.01** (.003) |
| IIV Control, γ03 | −.89*** (.22) | −.11 (.25) | −.49 (.26) | −.60* (.28) |
| Difficulty, γ10 | −.19***(.01) | .15*** (.01) | .12***(.01) | .09***(.01) |
| Average Control, γ02 | −.43***(.07) | −.30**(.09) | −.39***(.07) | −.33***(.08) |
| IIV Control × Diff., γ11 | .29***(.03) | .11***(.03) | .08**(.02) | .12***(.02) |
|
| ||||
| Random Effects | ||||
| Level 2 (τ00) | .18*** | .22*** | .20*** | .23*** |
| Level 1 (σ2) | .34*** | .47*** | .44*** | .45*** |
| R2 (Level 1) | .28 | .13 | .15 | .09 |
| R2 (Level 2) | .46 | .30 | .42 | .25 |
***
p< .001
**
p< .01
*
p< .05
R2 values were calculated using pseudo R2 (Raudenbush & Bryk, 2002)