| Predictor variables included | B | SE B | β | R2 | ΔR2 |
| Constant | 2.297 | .169 |
| .339 | .328 |
| Vigour | .196 | .058 | .423** |
|
|
| Dedication | .194 | .045 | .477** |
|
|
| Absorption | -.168 | .053 | -.370** |
|
|