highly significantp < .001
We investigated this interaction reducing the model by age the improvement in performance for the left hand after right hand training was a trend in the younger, F (1, 9) = 4.518, p = .062, η 2 p = .334), but highly significant in the older with a high effect size, F (1, 11) = 36.240, p < .001, η 2 p = .767.