Table 4.
Hierarchical regression analysis with informant reported IADLs as criterion
| Predictor | ß | t | ΔF (df) | F (df) | ΔR 2 | R 2 |
|---|---|---|---|---|---|---|
| Step 1 | 12.30*** (2,117) | .17 | ||||
| Age | .21 | 2.48* | ||||
| Education | −.33 | −3.91*** | ||||
| Step 2 | 11.50*** (2,115) | 13.00*** (4,115) | .14 | .31 | ||
| Age | .16 | 2.00* | ||||
| Education | −.26 | −3.26** | ||||
| Switching-ST-RT | .33 | 3.83*** | ||||
| Spatial WM | −.10 | −1.19 | ||||
| Step 3 | 4.48*** (6,109) | 8.83*** (10,109) | .14 | .45 | ||
| Age | .15 | 2.05* | ||||
| Education | −.21 | −2.80** | ||||
| Switching-ST-RT | .33 | 3.68*** | ||||
| Spatial WM | −.08 | −1.00 | ||||
| WM updating | −.36 | −4.44*** | ||||
| Flanker interference | .03 | 0.35 | ||||
| GNG-Hits | .12 | 1.40 | ||||
| GNG-nogo-ACC | −.06 | −0.82 | ||||
| Switching-SC | .23 | 3.00** | ||||
| Switching-MC | .15 | 1.79 |
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.