Looking back on my own childhood, I'm skeptical how much anything alleged to "enrich" the children actually made a difference. I recall most of all piano lessons. When I was a kid, every kid had to learn piano. Today, no adult I know ever plays piano; they forgot how because they don't like it and no one wants to hear it because it's boring. I know one serious professional musician. He taught himself guitar for our high school punk band and got super interested in guitar technique.

Now, you could say they learned "discipline" from the piano lessons. But how do we know? I don't see any relationship between who took the most piano and who became a doctor, etc. My view of piano lessons, and other enrichement, is that they are sort of homeopathy for parents' anxiety about their kids' future. Even when there is nothing to do for someone's medical condition, lots of people will turn to quack treatments out of anxiety, and these quack treatments involve a host of immeasurable concepts like "toxins" proposed to imitate the kind of causation we know of for better-known treatments. Same with piano lessons: your parents are too anxious about you to sit on their hands, so they make you practice piano and tell themselves, and each other, that you're learning "focus," some magic property that will stay in your brain one day even when they're not around. I don't buy it. Nobody made their kids take piano because they read a bunch of studies proving it makes your kid choose to go to med school or whatever; they clung to it automatically because they wanted to believe in it.