TABLE 4.
Regression analyses showing MCH and MCV as predictors of ERPs (P1, N1, P2, and P3) mean amplitude for switch and non‐switch stimuli at frontal and posterior‐parietal scalp locations, after controlling for gender
| Switch condition | Non‐switch condition | |||||||
|---|---|---|---|---|---|---|---|---|
| Cumulative | Simultaneous | Cumulative | Simultaneous | |||||
| Variable (Step 2) | R 2 change | F change | β | p | R 2 change | F change | β | p |
| P1‐Frontal | ||||||||
| MCH | 0.08 | F (1,102) = 8.51 | 0.28 | 0.004 | 0.06 | F (1,102) = 6.45 | 0.25 | 0.013 |
| MCV | 0.04 | F (1,101) = 4.70 | 0.21 | 0.033 | 0.01 | F (1,101) = 1.15 | 0.10 | N.S. |
| P1‐Posterior‐parietal | ||||||||
| MCH | 0.04 | F (1,102) = 4.72 | −0.21 | 0.032 | 0.04 | F (1,102) = 4.16 | −0.20 | 0.044 |
| MCV | 0.04 | F (1,101) = 4.14 | −0.20 | 0.045 | 0.01 | F (1,101) = 1.13 | −0.11 | N.S. |
| N1‐Frontal | ||||||||
| MCH | 0.10 | F (1,102) = 11.18 | 0.31 | 0.001 | 0.10 | F (1,102) = 11.23 | 0.32 | 0.001 |
| MCV | 0.05 | F (1,101) = 4.94 | 0.22 | 0.028 | 0.00 | F (1,101) = 0.32 | 0.05 | N.S. |
| N1‐Posterior‐parietal | ||||||||
| MCH | 0.07 | F (1,102) = 7.15 | −0.26 | 0.009 | 0.07 | F (1,102) = 8.05 | −0.27 | 0.006 |
| MCV | 0.04 | F (1,101) = 4.08 | −0.20 | 0.046 | 0.02 | F (1,101) = 1.54 | −0.12 | N.S. |
| P2‐Frontal | ||||||||
| MCH | 0.07 | F (1,102) = 7.48 | 0.26 | 0.007 | 0.04 | F (1,102) = 4.51 | 0.21 | 0.036 |
| MCV | 0.05 | F (1,101) = 5.21 | 0.22 | 0.025 | 0.00 | F (1,101) = 0.02 | 0.01 | N.S. |
| P2‐Posterior‐parietal | ||||||||
| MCH | 0.06 | F (1,102) = 5.95 | −0.23 | 0.016 | 0.02 | F (1,102) = 1.58 | −0.12 | N.S. |
| MCV | 0.06 | F (1,101) = 6.05 | −0.24 | 0.016 | 0.04 | F (1,101) = 3.81 | −0.19 | N.S. |
| P3‐Frontal | ||||||||
| MCH | 0.07 | F (1,102) = 6.66 | 0.25 | 0.011 | 0.05 | F (1,102) = 5.15 | 0.22 | 0.025 |
| MCV | 0.04 | F (1,101) = 4.15 | 0.20 | 0.044 | 0.03 | F (1,101) = 3.47 | 0.18 | N.S. |
| P3‐Posterior‐parietal | ||||||||
| MCH | 0.04 | F (1,102) = 3.50 | −0.18 | N.S. | 0.02 | F (1,102) = 2.38 | −0.15 | N.S. |
| MCV | 0.04 | F (1,101) = 3.95 | −0.20 | 0.05 | 0.02 | F (1,101) = 2.48 | −0.16 | N.S. |
Note: Gender was not found as a significant predictor of ERPs amplitude in any of the regression analyses performed; therefore, the results of “step 1” are not shown in Table 4.