The "blue light" story is only part of it — sleep researchers increasingly point to arousal and displacement: feeds that keep your mind alert and push bedtime later. What the evidence says about phones before bed, and what a realistic wind-down looks like.
Still doing the reading
Every Zovy Science article is written from the primary research — no recycled statistics, no borrowed listicles — and this one is still in progress. Here's what it will cover when it's published:
Infinite feeds run on the same reward schedule as slot machines — a mechanism psychologists mapped decades before smartphones existed. What the research on variable rewards and dopamine says about why scrolling is so sticky, and why the fixes that work look nothing like willpower.
Read the articleHeavy screen use doesn't make you less intelligent — but constant switching taxes the attention systems intelligence depends on. What studies on attention residue and media multitasking actually show about screens, focus, and measured cognitive performance.
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