Minute-by-minute observations showed that the typical student couldn’t stay focused on work for more than three to five minutes. As a measure of school success, students were asked to provide their grade point average (GPA), which was on a consistent four-point scale regardless of school level. Strikingly, the predictors of a lower GPA from extensive data collected about the students were: percentage of time on-task, studying strategies, total media time during a typical day, and preference for task-switching rather than working on a task until it was completed.
