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 in math, reading, and science. It is the world’s most famous measure of student ability. Most years, when the test makes contact with American news media, it provides instant ammunition for critics of America’s school system, who point to PISA scores and ask something like “Why are we getting crushed by Finland in reading?” or “Why are we getting smoked by Korea in math?”
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