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

Not Applicable

Recruiting

• Conditions: Preventive Health Care

• Registration Number: NCT07220044
• Lead Sponsor: University of Pennsylvania

Brief 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.

Detailed Description

The objective of this study is to determine whether tracking people's streak of behavior increases their engagement in that behavior. To test this, the investigators are designing a web application that participants can access daily using their phones or computers. Our previous work suggests that streaks may be useful in motivating people to be more productive. In this study, the investigators change how the investigators operationalize streaks and test streaks in a field context. Because most previous streak research is on how others perceive someone who has a streak, this work is novel because it examines how encouraging someone to achieve and keep a streak affects behavior in a field context. 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. The investigators are interested in whether people complete more daily lessons when a 30-day health challenge app provides daily feedback on their consecutive lessons (each comprising two multiple-choice questions) completed (i.e., "streaks") vs. when it provides feedback on their cumulative lessons completed (i.e., "tallies").

Study Timeline

• Study Start: 2025-09-23
• Status Verified: 2025-10
• Study First Submitted: 2025-10-21
• Study First Submitted QC: 2025-10-21
• Study First Posted: 2025-10-23
• Last Update Submitted: 2025-10-27
• Last Update Posted: 2025-10-29
• Primary Completion: 2026-01-23
• Study Completion: 2026-02-23

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 10000

Inclusion Criteria

• Our target population is 18 and older adults in the United States who have a valid U.S. phone number and who are willing to make an account on our web application for use during the duration of the study.

Exclusion Criteria

• Children under 18 years of age and adults without a valid U.S. phone number

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Total number of lessons completed	30 days	The key dependent variable is a person's total number of lessons completed during the 30-day Health Daily program. Participants can only complete a given day's lesson on that day; a lesson is only considered complete if both questions that comprise the lesson are answered.

Trial Locations

Locations (1)

University of Pennsylvania; 🇺🇸 Philadelphia, Pennsylvania, United States