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The effects of bedtime writing on difficulty falling asleep: A polysomnographic study comparing to-do lists and completed activity lists
Scullin, Krueger, Ballard, Pruett, Bliwise · 2018 · Journal of Experimental Psychology: General 147(1):139–146
What this work gives Aellic
57 young adults, 5 minutes of writing at bedtime, sleep measured by polysomnography: people who wrote a to-do list fell asleep significantly faster than those who wrote about activities they had completed; the more specific the list, the faster they fell asleep. There was no no-writing control group.
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