The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
And the focus training exercises that have been explored mainly in China, but they're starting to be explored over here as well, do seem to be of benefit. And these are as they sound. They use them in schools in China now, which are literally visual focus exercises.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
In China, many schoolroom classrooms begin before the lesson with the kids literally focusing on a single spot... but they have embraced this relationship between visual attention and overall kind of ability to cognitively focus and chickens do it. Kids in China are doing it and it actually has been shown to work pretty well for improving attention in you know the the subsequent you know 40 minutes to an hour.