Table 3. Stepwise Multiple Regression Analysis of the Variables that were Found to Have a Significant Univariate Relationship with Stroop-tones.
| Variable | B | SE B | β | t | p | F | R2 | R2 adjusted |
| Model 1: demographics | - | - | - | - | <.001 | 20.719 | .191 | .182 |
| Significant predictors | ||||||||
| - Age | -.097 | .021 | -.315 | -4.547 | <.001 | - | - | - |
| − Educational level | .519 | .145 | .249 | 3.593 | <.001 | - | - | - |
| Excluded variables | ||||||||
| - | - | - | - | - | - | - | - | - |
| Model 2: verbal processin speed | - | - | - | - | <.001 | 12.244 | .123 | .113 |
| Significant predictors | ||||||||
| − Span length 3 | -.002 | .001 | -.190 | -2.412 | .017 | - | - | - |
| − Span length 4 | -.001 | .000 | -.222 | -2.813 | .005 | - | - | - |
| Excluded variables | ||||||||
| - | - | - | - | - | - | - | - | - |
| -Model 3: visual processing speed | - | - | - | - | <.001 | 28.008 | .141 | .136 |
| Significant predictors | ||||||||
| − Span length 4 | -.004 | .001 | -.375 | -5.292 | <.001 | - | - | - |
| Excluded variables | ||||||||
| − Span length 2 | - | - | -.043 | -.523 | .602 | - | - | - |
| − Span length 3 | - | - | -.060 | -.572 | .568 | - | - | - |
Note. B=unstandardized regression coefficient; SE B=standard error of the coefficient; β=standardized coefficient; R 2=coefficient of determination; −=not applicable; p ≤ .05=significant as indicated in bold.