This article alludes to something I've been wanting to say for a long time in this thread. Watch your kids' screen time closely. Even when they are very young. Maybe especially when they are very young.
I know full well that pre-schoolers are going to have an appreciable amount of screen time. My kids had screen time when they were little.
But you really gotta watch that. Screen time (too much of it) really has an impact on both behaviour and school performance. You can tell in elementary school - it's very obvious.
https://www.theguardian.com/australi...pment-learning