Geolocation Positional System (GPS) Experience

Study Overview
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Brief Summary
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The purpose of this study is to use smartphone technology to capture individual location emotional and cognitive data, to examine how real-world behaviors thoughts, emotions, and brain activity are related to one another.

Detailed Description
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The observational portion of this study was initially approved in 2015, this is a subset of the initially approved study and it is a clinical trial of 100 participants.

Official Title
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Individual Differences in Emotional and Behavioral Patterns and Their Relationship to Cognition

Conditions
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Emotions, Anhedonia, Depression

Intervention / Treatment
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* Behavioral: Modifying Exploration


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Must agree to give informed consent Must be willing to have an functional Magnetic Resonance Imaging (FMRI) scan Must be able to receive and respond to daily text messages assessing current emotion Must be willing to download and run a GPS tracking application (FollowMee) onto their smartphone for a four-month period Exclusion Criteria: history of head trauma, seizures, or neurological disorders severe/unstable medical conditions conditions that interfere with MRI pregnancy lifetime psychotic/bipolar disorder chronic/severe substance or alcohol abuse/dependence antipsychotic medication

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Basic Science
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Modifying Exploration<br>Individuals will be asked on certain days to increase their levels of exploration, and some days be asked to decrease their levels of exploration. Participants will do this for up to six months. | Behavioral: Modifying Exploration<br>* Participants in this group will use a mobile phone sensor data application that uses an accelerometer, Wireless Fidelity (WiFi) and/or GPS designed for smartphone devices. This technology allows the phones to capture information automatically and passively on the participant's activity. The application will be collecting participants' data 24 hours a day, 7 days a week. Participants will be asked to make alterations to their exploration levels approximately 20 days of their participation in the study.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in positive emotional response as measured by ecological momentary assessment | Emotional response will be measured by computing a total mean score of happy, excited, content, attentive, relaxed. The total mean score ranges from 0 to 100, with higher scores indicating greater positive emotional response. | Baseline, up to 6 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in negative emotional response as measured by ecological momentary assessment | Emotional response will be measured by computing a total mean score of sad, tired, upset, irritable, anxious. The total mean score ranges from 0 to 100, with higher scores indicating greater negative emotional response. | Baseline, up to 6 months |