2,108
Participants
Start Date
May 7, 2019
Primary Completion Date
October 30, 2019
Study Completion Date
August 30, 2020
Weekly feedback
Send push notification reporting user's handheld phone use while driving compared to distribution for driver cohort (age, geographic area) each week.
End of intervention period incentive
Notify participant about potential incentive at the end of the intervention period, but do not provide weekly feedback about performance.
Loss-framed weekly incentive
Send push notification reporting user's handheld phone use while driving compared to distribution for driver cohort (age, geographic area) each week. Pay participant weekly according to where they fall on the distribution each week.
University of Pennsylvania, Philadelphia
U.S. Department of Transportation Federal Highway Administration
UNKNOWN
University of Pennsylvania
OTHER