As for why there aren't studies on the efficacy of non-drug treatments, it's because drug companies pay for studies. There's no benefit to them funding any of those studies, so they don't get done. Sad but true.
And: stimulant meds have been around for ages (since the 50s, maybe?) so there are longitudinal studies. All the computer-based treatments are quite new, most still in development or recently released, so it's hard to get a longitudinal perspective on them.
And: I believe there ARE studies on medication vs. "talk therapy" type treatments. My understanding (note: I have not read the literature on this) is that the behavioral therapies really start working around middle school age and up, but not before.
DeeDee
