Have you found any studies that show that shared environment makes a "huge difference" on broadly how a kid turns out? I haven't seen any. And that cdc site is

Have you found any studies that show that shared environment makes a "huge difference" on broadly how a kid turns out? I haven't seen any. And that cdc site isn't evidence. If you look through any of those studies it's all correlational. So they have literally 0 power to differentiate outcomes driven by genetics vs shared environment.