Jon Haidt's been saying this for years. Evidence keeps rolling in. Funny how the only people who loudly object (1) don't have kids, or (2) don't teach kids, or both. www.science.org/doi/10.1126/...
Phones impede learning: Evidence from a massive phone-free classroom experiment
Lower-performing students benefited the most, but even higher-performing students expressed support for the policy
science.org