In two surveys of nearly 20,000 high schoolers, students who reported using at least one self-control strategy—such as turning off their phone—tended to spend more time practicing for the SAT and had higher SAT scores than students who relied purely on willpower. Chayce Baldwin of the University of Michigan, Ann Arbor, Angela Duckworth of the University of Pennsylvania, Philadelphia, and co-authors present these findings in the open-access journal PLoS ONE on September 28, 2022.