Fig. 2 –

Variables selected in the forward regression models for trained and untrained words. The y axis shows the cumulative R² of models where variables are added iteratively based on cross-validated R². Panels A to C show variable selection for trained words and D to F for untrained words, for the three time-points: immediately after training (on the left panel), two weeks (center panel), and two months after training (right panel). The x axis lists the number of predictors selected by the regression, in order of their introduction in the model.