StudentLife quantifies the daily and weekly impact of workload on factors like mood, sociability and academic performance

If a group of Dartmouth students has their way, you'll be able to know someone's GPA simply by looking at their phone. StudentLife, an Android app they designed, can estimate a grade point average within nearly one-fifth of a point by measuring factors like how often you exercise or when you go to sleep.

The students—who created an initial version of the app last fall—used it this past school year to study how over a dozen variables like sleep, stress, and sociability affect the academic performance of students.

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