Table 2. Effects of Age and Amplitude on performance, for each condition of precision.
| Modality | Variable and precision | Age | Amplitude | Age × Amplitude |
| sustained | reach time R low precision | F(1,40) = 12.7 p<0.05, Δ = 39% | F(3,120) = 31.3 p<0.001, Δ = 44% | F(3,120) = 9.6 p<.005 |
| reach time R high precision | F(1,40) = 32.0 p<001, Δ = 47% | F(7,280) = 22.6 p<0.001, Δ = 46% | F(7,280) = 9.9 p<.001 | |
| complete stabilization time S low precision | F(1,40) = 259.9 p<.001, Δ = 32% | F(3,120) = 5.8 p<.005, Δ = 24% | F = 0.41 N.S. | |
| complete stabilization time S high precision | F(1,40) = 458.5 p<.001, Δ = 38% | F(7,280) = 1.2 N.S. | F(7,280) = 1.9 N.S. | |
| rate of failure F low precision | F(1,40) = 6.6 N.S. | F(3,120) = 3.6 N.S. | F = 1.5 N.S. | |
| rate of failure F high precision | F(1,40) = 11.2 p<.005, Δ = 105% | F(7,280) = 3.0 N.S. | F(7,280) = 3.1 N.S. | |
| impulsion | reach time R low precision | F(1,40) = 6.6 N.S. | F(3,120) = 3.7 N.S. | F = 0.6 N.S. |
| reach time R high precision | F(1,40) = 5.6 N.S. | F(7,280) = 9.2 p<.001, Δ = 19% | F(7,280) = 1.0 N.S. | |
| rate of failure F low precision | F(1,40) = 38.4 p<.001, Δ = 74% | F(3,120) = 5.4 p<.005, Δ = 31% | F = 1.6 N.S. | |
| rate of failure F high precision | F(1,40) = 24.1 p<.001, Δ = 32% | F(7,280) = 7.3 p<.001, Δ = 37% | F(7,280) = 2.5 N.S. |
Significance threshold is p = .05. The Greenhouse-Geisser corrective coefficient has been applied to the values of p because the distributions are not spherical, according to the Mauchly test. Δ = magnitude of effect determined as the maximal differences between marginal means expressed in percentage of overall Mean (unlike average difference, maximal difference allows comparing magnitude for variables that have different numbers of modalities, 2, 4 and 8).