Northwestern scientists believe an open-access android cell phone app called Purple Robot can detect depression simply by tracking the number of minutes you use the phone and your daily geographical locations.
The more time you spend using your phone, the more likely you are depressed, they found in a small Northwestern Medicine study published yesterday (July 15) in the Journal of Medical Internet Research. The average daily usage for depressed individuals was about 68 minutes, while for non-depressed individuals it was about 17 minutes.
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