Overview
- The global study published July 21 in the peer-reviewed Journal of Human Development and Capabilities analyzed data from more than 100,000 18- to 24-year-olds worldwide
- Respondents who owned their first smartphone before age 13 reported elevated instances of suicidal thoughts, aggression, detachment from reality, poor emotional regulation, low self-worth
- Early social media access explained roughly 40% of the observed link, with cyberbullying, sleep disruption, poor family relationships accounting for additional effects
- The association between preteen device ownership and adult mental health challenges was consistent across cultures, languages, geographic regions
- Lead authors recommend restricting smartphones for under-13s, mandating digital literacy education, increasing corporate accountability despite the study’s inability to prove causation