https://matteocampagna.com/en/registry/mind/smartphone-dependence-score Changes to this claim in Matteo Campagna's evidence registry: its status, its year-by-year history, revisions of the page. en-gb https://matteocampagna.com/en/registry/mind/smartphone-dependence-scoreThere is a single study, from 2023, of thirty Indonesian club archers: they complete a questionnaire on nomophobia, the fear of being without a smartphone, and then shoot thirty-six arrows at 40 metres. The fifteen most dependent average 168 points, the fifteen least dependent 188, a difference of twenty points, and two archers out of fifteen among the most dependent reach the 180 to 269 score band against eleven out of fifteen among the others. It is a cross-sectional comparison, and it does not say which comes first: those more attached to their phone might train less, sleep worse or be younger, and none of this was controlled for. The journal has questionable editorial standards: the registry reports the study but does not use it to decide the status, which remains not studied. It is also a different question from the one about using social media before a competition, which concerns the moment rather than the habit.claim:nomofobia-punteggio:revision:2026-08-26:2Wed, 26 Aug 2026 08:00:00 GMT https://matteocampagna.com/en/registry/mind/smartphone-dependence-scoreclaim:nomofobia-punteggio:new_claim:2026-08-13:non_studiatoThu, 13 Aug 2026 08:00:00 GMT