Not finding the hypothesized effect of active versus passive condition on dexterity could be due to dexterous activities that the participants were engaged in outside of the training modules. For example, three of the 15 participants reported that they currently play piano in their free time, so it can be conjectured that those participants were engaged in active piano playing even when they were in the passive listening module. Other activities enjoyed by participants include exercise classes and painting—both of which could have been improving or maintaining their dexterity throughout the study.