A longitudinal study of children in North Carolina found that better parental supervision of children in early adolescence was associated with higher household income of the child at age 35. Children of parents who did not engage in adequate supervision earned approximately $14,000 less per year compared to those who did. The study was published in PLOS One. ...
If they’re 35 now we’re talking 20+ years ago. So late 90s/early 2000s when iPads were not yet a thing.
The same study may show up something different in a decade or two.
Also, I wager that most wealthy families are not iPad families but I could be wrong on that. I’d say there are just more iPad families now so they’re very noticeable.
Oh so the study is old, before the internet became mainstream… Yeah that explains a lot of things