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It is smartphones and social media.

The decline is across demographics, across geographies, and correlated with an increase young mental health issues.

The answer is staring us in the face, quite literally, as we type this. We put a cheating and dopamine producing machine in the hands of children without any regulations. Of course it is harming their academic performance.

Ask a football coach if there kids are going to play tackle football and you'll be surprised how often you they won't let them. Ask an educator or psychologist at what age they give smart devices to their kids, and I'd guess it is 3-4 years above the median.

The policy doesn't matter when we're actively damaging the brains of children, which are not fully developed.

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