Are Phones Making the World's Students Dumber?

Long-time Slashdot reader schwit1 shared this article from the Atlantic:
For the past few years, parents, researchers, and the news media have paid closer attention to the relationship between teenagers' phone use and their mental health. Researchers such as Jonathan Haidt and Jean Twenge have shown that various measures of student well-being began a sharp decline around 2012 throughout the West, just as smartphones and social media emerged as the attentional centerpiece of teenage life. Some have even suggested that smartphone use is so corrosive, it's systematically reducing student achievement. I hadn't quite believed that last argument — until now.

The Program for International Student Assessment, conducted by the Organization for Economic Co-operation and Development in almost 80 countries every three years, tests 15-year-olds est scores have been falling for years — even before the pandemic. Across the OECD, science scores peaked in 2009, and reading scores peaked in 2012. Since then, developed countries have as a whole performed 'increasingly poorly' on average. 'No single country showed an increasingly positive trend in any subject,' PISA reported, and 'many countries showed increasingly poor performance in at least one subject.' Even in famously high-performing countries, such as Finland, Sweden, and South Korea, PISA grades in one or several subjects have been declining for a while.

So what's driving down student scores around the world? The PISA report offers three reasons to suspect that phones are a major culprit. First, PISA finds that students who spend less than one hour of 'leisure' time on digital devices a day at school scored about 50 points higher in math than students whose eyes are glued to their screens more than five hours a day. This gap held even after adjusting for socioeconomic factors... Second, screens seem to create a general distraction throughout school, even for students who aren't always looking at them.... Finally, nearly half of students across the OECD said that they felt 'nervous' or 'anxious' when they didn't have their digital devices near them. (On average, these students also said they were less satisfied with life.) This phone anxiety was negatively correlated with math scores.

In sum, students who spend more time staring at their phone do worse in school, distract other students around them, and feel worse about their life.

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