Fig. 4

Distribution of performance in the sample. Top: summary of performance in the sentence copying task on which the definition of performance groups is based. Mean typing speed (wpm: words per minute) is plotted as a function of mean accuracy (proportion correct). Each dot is a participant. Performance groups defined following the preregistered procedure are displayed in colour/shape. Marginal distributions of typing speed and accuracy are shown on the X and Y axes. Bottom: boxplots of the typing speed and accuracy rates of the two performance groups.