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When can your child stay home alone? Neuroscience suggests we’re asking the wrong question
(theconversation.com)
Author: Codie C. Lavoie - Pediatric Neurologist and Sleep Specialist, University of Southern California
Caregivers often seek a specific age that their child can be left home alone. However, the neuroscience of brain development suggests that readiness depends on much more than a birthday.
The article is relatively short, so I didn't bother with a TLDR since I'd lose helpful info. If you want, here is a short checklist
I didn't leave my kid home alone till he was 15, only because I didn't have anywhere to go till then.