Table 3.
The effects of time-on-task, age, and their interaction on the different dependent variables of speed described by the chi-square (χ2) and the β-weights of the final models that describe the effects of time-on-task, age, and/or their interaction on the dependent variables.
| Dependent variable | ToT χ2(1) | Age χ2(1) | ToT∗Age χ2(1) | βToT (SE) | βAge (SE) | βToT∗Age (SE) |
|---|---|---|---|---|---|---|
| Typing timesentence | 9.40∗∗ | 38.40∗∗∗ | 1.61 | 0.037 (0.004) | 20.5 (2.67) | – |
| General interkey intervalsentence | 8.64∗∗ | 43.65∗∗∗ | 1.45 | 0.003 (0.0004) | 2.79 (0.33) | – |
| Typing timelastword | 0.42 | 45.61∗∗∗ | 27.45∗∗∗ | -0.01 (0.005) | 11.26 (1.62) | 0.031 (0.006) |
| Stimulus–key intervallastword | 4.70∗ | 44.87∗∗∗ | 16.54∗∗∗ | 0.0008 (0.0012) | 4.17 (0.56) | 0.007 (0.002) |
| General interkey intervallastword | 5.69∗ | 54.62∗∗∗ | 7.65∗∗ | -0.001 (0.002) | 2.84 (0.32) | 0.004 (0.001) |
The bolded values are the significant results. ∗p < 0.05; ∗∗p < 0.01; ∗∗∗p < 0.001.