Previous research has shown that there is a relationship between mood and certain activities, such as religious practice, participating in social activity, and spending excess sedentary time at home. It may be that the nature of the places and the meaning inherent in different locations affect how we feel. It is unclear at this point why these GPS location features may be related to depression or anxiety. For example, semantic location might tell us if a location is a home, place of work, dining establishment, or place of worship, thereby infusing the geographic location with human relevance.Ī growing number of papers have shown that a variety of location features, measured by GPS, can detect mental health problems such as depression, bipolar disorder, and social anxiety. In contrast to physical location, semantic location carries additional information about the meaning of the location. Physical location alone is usually not very useful for understanding human activity, or the motivations that underlie that activity. Passive and unobtrusive detection of the physical location of individuals has been made possible over the years by embedding global positioning system (GPS) systems into commonly used devices, such as mobile phones.

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