Cognitive control training: within-sex effects
While the hierarchical analysis above answers the question whether females and males varied in their performance gains, it does not allow to draw conclusions about performance changes based on tDCS polarity within each sex. Hence, we analysed the two sexes independently thereby exploring possible tDCS effects that are prominent in one sex but absent in the other. Figure Performance development within each sex. Measurement of performance is the sum of correct trials per session. Shown are the number of correct trials for all females in 