Table 4.
Outcome variable | Predictor variable | R2 | F | Sig. model | b | t | Sig. predictor | Variance predicted by AoA |
|
---|---|---|---|---|---|---|---|---|---|
Total volume | R.IFGor | AoA | 0.302 | 4.610 | 0.009** | 0.229 | |||
Proficiency | 0.865 | ||||||||
Exposure | 0.059 | ||||||||
R.AG | AoA | 0.254 | 3.639 | 0.023* | −230.971 | −2.654 | 0.012* | 16.403% | |
Proficiency | 0.092 | ||||||||
Exposure | 0.970 | ||||||||
R.SPL | AoA | 0.333 | 5.337 | 0.004** | −178.670 | −3.008 | 0.005** | 18.836% | |
Proficiency | 0.233 | ||||||||
Exposure | 0.583 | ||||||||
Grey matter volume | R.IFGor | AoA | 0.299 | 4.545 | 0.009** | 0.281 | |||
Proficiency | 0.958 | ||||||||
Exposure | 0.053 | ||||||||
R.SPL | AoA | 0.352 | 5.792 | 0.003** | −120.590 | −3.097 | 0.004** | 19.448% | |
Proficiency | 0.188 | ||||||||
Exposure | 0.563 | ||||||||
White matter volume | R.IFGor | AoA | 0.236 | 3.292 | 0.033* | 0.171 | |||
Proficiency | 0.873 | ||||||||
Exposure | 0.192 | ||||||||
R.AG | AoA | 0.315 | 4.900 | 0.006** | −93.862 | −3.148 | 0.004** | 21.252% | |
Proficiency | 0.122 | ||||||||
Exposure | 0.992 | ||||||||
Cortical area | R.IFGor | AoA | 0.308 | 4.162 | 0.015* | 0.338 | |||
Proficiency | 0.529 | ||||||||
Exposure | 0.127 | ||||||||
R.SPL | AoA | 0.270 | 3.453 | 0.030* | −45.273 | −2.632 | 0.014* | 18.063% | |
Proficiency | 0.661 | ||||||||
Exposure | 0.601 |
Note. AoA, proficiency and exposure were added in the model as predictors. When none of the three predictors had a statistically significant contribution, we reported each predictor’s p value in the model. When any of the three predictors was a significant predictor, we reported the t, b, p values and variance explained by this predictor (p < 0.05*, p < 0.01**). R = right; IFGor = inferior frontal gyrus pars orbitalsi; AG = angular gyrus; SPL = Superior parietal lobule.