However, according to a London School of Economics study on mobile phone issues, after the ban on mobile use, test scores improved by 6.4%. The impact on bad students was even more important, with their own scores in competitions improving by 14%. "The results show that students with bad grades are more likely to be distracted by mobile phones, while the best students can gather in the classroom regardless of whether they have a mobile phone with them," the investigators explained, referring to the temptation to send a message, play games on his mobile, or chat with others on social media.

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