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Daily Smartphone Surveys


Every six months we will ask you to use a smartphone app for 14 days to share details about your sleep, stress, and any substances you use (including caffeine). This app will also collect information about your sleeping environment (e.g., temperature, humidity, background noise) through built-in sensors in your smartphone. 


The app we are using is called mEMA (mobile Ecological Momentary Assessment). These instructions explain how to set up and use mEMA.


If you have any questions, please feel free to call us (859-562-0112) or email us (

How long is the study?

How long is the study?

partcipant device

Setup using your own device

Step 1:
  • Download and install the mEMA app

    • from the Apple App Store (if you have an Apple phone or tablet)

    • or from the Google Play Store (if you have an Android phone or tablet). 

  • In the Apple App Store, the app is titled “mEMA-Sense.” in the Google Play Store the app is titled “mEMA.” The Apple App Store profile is pictured below. 

Step 2:
  • Upon opening the app, it will ask you about several permissions for the app. Please allow all permissions for the app to be able to function properly. 

    • Note: the researchers will not be accessing any location information, however the app will need this, and all other permissions, to work correctly.

​​Step 3:
  • Enter your mobile code.

    • Depending on your device, you may be able to directly enter your code, or you may need to tap on the padlock icon to enter your mobile code.

  • This code will be provided to you by the researchers. If you do not have this code, please reach out to us by phone (859-562-0112) or by email at

  • On Android devices, after entering your code, select “Download Updates” to proceed. 

Step 4:​
  • On Apple devices, after entering your code, you will be asked to “Enter New mEMA URL.” Please leave the URL as is and select “OK,” then confirm your entry by selecting “OK” again. 

Step 5:
  • From your home page, select “My Assessments” to view questionnaires assigned to you.

Step 6:
  • If an assessment has a green plus sign next to it, the assessment is ready for you to complete!

  • Touch the green plus sign (+) to complete the assessment.  If you touch the task name or list icon instead of the plus sign you may receive an error message asking you to tap “Back.”

  • If you have a scheduled assessment, you will receive a notification informing you when it is time to complete the assessment.  

    • Selecting the notification or opening the app should automatically launch you into the assigned questionnaire, but if it does not, you are still able to access it by going to “My Assessments.” 

Step 7:

Upon completion of the assessment, you will be taken back to the homepage and the information will auto-upload to the mEMA platform if your device is connected to the internet. 

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loaner device

Setup using a loaner device

Step 1:
  • Fill in steps

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