"The babies' stress reactions during smartphone use were comparable to those in the 'still-face' situation—that is, intentional ignoring." https://www.pmu.ac.at/aktuelles/detail/wenn-das-smartphone-d...
When you see the following sentence: "She said parents should not be blamed for a problem they did not create."
associated with the deceptive title, you can know for sure that this article has a hidden objective, and that there is a big lobby behind it. Something like "internet, digital, ... is bad, there should be regulation for that".
Because, let's be serious, if the causality was there (it is not the case), the obvious conclusion is that the parents are not doing their job or at most not well educated enough on how to raise a kid. It would not be the fault of anyone else.
There’s no reason for kids under 6 to ever look at a screen.
"Landmark" review by an advocacy group. Not a good review, either.
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The article title claims causality. The article body says the researchers didn't claim causality: