A better version of this study would be to run an experiment where you take away (or heavily restrict) parental phone access over a month or two and measure the parent-child relationship vs. a control group.

> "Pay more attention to your kids", which is a pretty good universal message to put across.

I wouldn't be too sure of that actually: https://www.archbridgeinstitute.org/the-secret-to-parenting-...