Brilliant question.
Officially, we only recommend the BrainEv program for individuals aged over 18. Check the disclaimer here:
http://support.brainev.com/fda-disclaimerHowever, brainwave entrainment *is* actively used with children without issue. The main point is that you consult with a doctor first - and ensure they're checked for any illness which may cause seizures, such as epilepsy.
Regarding ADD - amazing results in that department. He's one quick random Web snippet:
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In a 1999 study, Thomas Budzynski, Ph.D worked with 8 struggling college students. After undergoing audio-visual brainwave stimulation, the students outperformed a control group and significantly increased their GPA. In a separate study, Psychologist Michael Joyce used brainwave entrainment with a group of 30 children. After a short period of treatment, he observed improvements in reading and a half year advancement in grade level. Additionally, the children showed substantial improvements in attention, reaction and a reduction in impulsivity and variability. Harold Russel Ph.D. and John Carter, Ph.D., of the University of Houston, did several studies in which they used brainwave entrainment to treat ADD and other learning disorders, testing IQ before and after treatment. Astonishingly, after treatment the subjects showed a consistent 5 to 7 point increase in IQ score!