Collecting phones during college lessons raises grades, large randomized trial finds‎

Your phone vibrates, a notification pops up, or you just take a quick glance at the screen. Even minor interruptions can affect your concentration—not least when you're in class. Now, a large randomized trial involving more than 16,000 students in India shows that teaching without access to mobile phones can improve students' academic performance. The researchers also found that students who experience phone-free teaching firsthand become more supportive of the restrictions. The research is published in Science.