Participants
The study participants of this study were randomized to either TM or CG. However, they were not stratified according to sex nor computer gaming experience, which unfortunately created some imbalance between the groups with a statistically significant difference regarding computer gaming experience in which the participants of the TM group had significantly more computer gaming experience, probably reflecting the male dominance of this group (Table 
Computer gaming experience among females and males. Horizontal bars, boxes and whiskers represent the median, interquartile range, and range, respectively