Anonymous. (2026). TODO: a claim summarizing the (currently sparse) intervention-study evidence — natural experiments, staggered phone bans, deactivation RCTs — and what it does and doesn't show. Isonomia. https://www.isonomia.app/a/ALzgOx4c@8af6f45485da0904326f9076d1e01253644887b680a7e256d1aa376ad542ac48