Table 3.
Hierarchical regression analysis with self-reported IADLs as criterion
| Predictor | ß | t | ΔF (df) | F (df) | ΔR 2 | R 2 |
|---|---|---|---|---|---|---|
| Step 1 | 3.74* (2,116) | .06 | ||||
| Age | .16 | 1.58 | ||||
| Education | −.12 | 1.81 | ||||
| Step 2 | 7.46** (2,114) | 5.81***(4,114) | .11 | .17 | ||
| Age | .13 | 1.47 | ||||
| Education | −.10 | −1.17 | ||||
| Switching-ST-RT | .21 | 2.19* | ||||
| Spatial WM | −.19 | −2.08* | ||||
| Step 3 | 7.63*** (6,108) | 7.71*** (10,108) | .25 | .42 | ||
| Age | .09 | 1.18 | ||||
| Education | −.04 | −0.54 | ||||
| Switching-ST-RT | .24 | 2.57* | ||||
| Spatial WM | −.10 | −1.15 | ||||
| WM updating | −.53 | −6.29*** | ||||
| Flanker interference | −.11 | −1.49 | ||||
| GNG-Hits | .05 | 0.59 | ||||
| GNG-nogo-ACC | −.04 | −0.58 | ||||
| Switching-SC | .03 | 0.36 | ||||
| Switching-MC | .15 | 1.77 |
Note. IADL = Instrumental Activities of Daily Living Scale; ß = standardized regression weight; ST = single-task trials of the switching task; RT = response time; WM = working memory; GNG = go/no-go task; nogo-ACC = correct rejections; SC = switch cost; MC = mixing cost.
*p < .05.
**p < .01.
***p < .001.