A change of half a standard deviation is deemed to be significant. We observe that this criterion is met for 9 of the 13 children. Since every child benefited in terms of impulsivity, it is clear that the systematic effect of the training overwhelmed any random variation in test results. More detailed treatment of the cases showing the largest impulsivity scores follows. Impulsivity data for entire cohort of ADHD children evaluated with the T.O.V.A. to date.
Scores are in multiples of one standard deviation.
Increasing positive score means worse performance. His history included a head injury as an infant. Changes observed with EEG training included improved school and home behavior, and higher academic skills. Figure 2 shows the T.O.V.A. data for this child. The first test was done after ten sessions of EEG training had already been performed, and behavior had already shown improvement.