Clinical Trial

Effects of Streak-Based Versus Tally-Based Feedback on Daily Lesson Completion During a 30-Day Digital Health Challenge

Study acronym: Streaks
Completed
View on ClinicalTrials.gov →
Summary
The study will test two interventions for increasing engagement with a target behavior, delivered via a digital web application that participants can access using their phones or computers. For example, in the streak group, users would see how many consecutive days they have completed daily lessons and will be encouraged to extend their streak. In the tally group, participants will see how many cumulative days they have completed daily lessons and will be encouraged to extend their tally.
Protocol Amendment History 4 amendments
This ClinicalTrials.gov record has been amended 4 times since 2025-10-21; most recent amendment 2026-02-02.
Status change: Active, Not Recruiting → Completed 2026-01-23
Status change: Recruiting → Active, Not Recruiting 2026-01-07
Trial Details
NCT Number NCT07220044
Lead Sponsor University of Pennsylvania
Collaborators: National Institute on Aging (NIA)
Conditions Preventive Health Care
Enrollment 7,004 participants
Start Date 2025-09-23
Primary Completion 2026-01-21 (estimated)
Study Completion 2026-01-21 (estimated)
Updated on ClinicalTrials.gov 2026-02-03