Statistical analysis
Statistical analyses were performed using IBM SPSS27® (Version: 27.0.0.0). Data was tested for normal distribution by Shapiro–Wilk test. Where normal distribution was attained, we used independent/paired samples t-test. Where normal distribution was not attained, the Mann–Whitney-U test was used. Data was tested for equal sphericity by Mauchly’s test. Where equal sphericity was not attained, Greenhouse–Geisser correction was applied. Data was tested for homogeneity of variance by Levene’s test. Touch typing data (GainFor the statistical analyses used in the fMRI and VBM data please see respective methods sections above.Findings were considered significant at 