This is not the first such study. I researched a similar topic for work last year.
Agreed.
Much of what "school" consists of these days is dependent upon executive maturity and highly age-normed expectations (and, dare I say, even
beyond age-appropriate expectations for a good portion of kids) of those skills.
It's about whether or not kids can/will follow directions, do as they are told, and possess the self-control to NOT be disruptive.
Drugging the kids who
can't do those things is fairly clearly a matter, at least some of the time, of drugging kids who simply aren't READY to do them...
yet. I've said for years (and experienced elementary educators have been saying it, as well) that it isn't kids that have changed-- it's what the system is doing to them (and expects of them).