Sure -
And for many generations, it was thought that you Could "DRILL this" via sticks and corporal punishment with some bizarre, one might say sadistic variants -- even teach math..?! via sufficient numbers of RAPS on the knuckles, of incarcerated schoolchildren.
So you propose to 'teach' / DRILL [this adult] discrimination: exactly How?
(There are n-million volumes on this topic, already. I'm guessing that there must be some contradictory 'methods' out there. There's also Truth by T. Pratchett, when all those fail. Too.)
Oh, I've heard, that in 'farmilies' -- Good Examples are known to be pretty effective..
(That needs though, an Adult head-of-family. Doesn't it? Bummer, that.)
{sheesh}