Commitment Pledges
Periodic requests sent to participants asking them to commit or re-commit to participating in a group. If they do not commit, members are removed from the group. If they do, their commitment is seen by all group members.

Goal: Increase participation in online groups Evidence rating (PDN): Tentative Civic signal: Connect — Cultivate Belonging When to use: Proactive
What it is
Periodic requests sent to participants asking them to commit or re-commit to participating in a group. If they do not commit, members are removed from the group. If they do, their commitment is seen by all group members.
Intended impact
Commitment pledges are intended to increase user participation, group activity, and retention. They also aim to provide users with increased likelihood of psychological safety and feelings of value and importance while increasing inclusive participation.
Evidence that it works
Popowski et al., 2024 conducted a study in which participants were placed in common interest groups for three weeks on a mobile group chat platform called Commit and asked to engage in conversation with each other. Participants were randomly assigned to either a treatment condition in which they were asked to ‘commit’ every two days (and risk being removed if they did not), or to a control condition in which participants were nudged to participate (with no specific consequence).
Results showed that if participants were in the commit condition, they sent double the number of messages and were more likely to remain active. (Note: all effects we include are statistically significant, unless otherwise stated.) However, being in the commit group did not increase inclusive participation (i.e. there was no reduced gap between frequent and infrequent contributors). Qualitative interviews conducted after the experiment suggest that being in the commit group made people feel safer, more comfortable to contribute, and more able to rely on each other.
While the results above are promising, it is important to note that the study was conducted with students in a course for credit and on a simulated social media platform which limits the study's generalizability.
Why it matters
Many online groups, including those meant to create community and provide social support, struggle to have sustained participation. Many don’t survive past the initial days before they are able to reach critical mass. Such online groups - and the members they are intended to support - benefit from designs that can help them reach critical mass, sustain engagement and thrive.
Special considerations
As may be implicit, this intervention was designed and tested with groups that have a common interest in mind, so it is unclear - and perhaps unlikely - that it would be effective on a large social media platform
Including commitment as a prosocial design intervention hinges on the assumption that those committing will be engaging in prosocial contributions.
Citations
- *Commit: Online Groups with Participation Commitments* — Popowski, Lindsay, Yutong Zhang, and Michael S. Bernstein (Proceedings of the ACM on Human-Computer Interaction 8. CSCW2)
---
From the Prosocial Design Network's Digital Intervention Library (https://www.prosocialdesign.org/library/commitment-pledges), licensed CC BY-SA 4.0. Reformatted for the RT Commons; text otherwise as published. Library citation: Prosocial Design Network (2024), Digital Intervention Library, https://doi.org/10.17605/OSF.IO/Q4RMB. Anything built from this pattern should credit the Prosocial Design Network and the researchers cited above.
Details
- goal: Increase participation in online groups
- citations: [object Object]
- image alt: A dialog box with a picture of two hands shaking, which says "I pledge to participate in this group." the illustration says the user may Commit to the pledge or decline it. It says beneath that the pledge will be made visible to the community.
- image url: https://cdn.prod.website-files.com/647f696dc653a97c26f42a0b/695017461f07ca7587e0b315_Commitment%402x.png
- pdn rating: Tentative
- when to use: Proactive
- civic signal: Connect
- pdn library doi: 10.17605/OSF.IO/Q4RMB
- civic signal goal: Cultivate Belonging
-
Recipe
Accuracy Prompts
Any message (text, image, video) delivered on a social media platform that reminds users of the importance of considering the accuracy of…
-
Recipe
Adding Balanced News
A feed-ranking algorithm that inserts news posts from a set of credible, ideologically balanced news outlets into users’ feeds, increasing…
-
Recipe
Ask Users to Write Something Substantive When Sharing Content
Whenever users try to share external content, the platform suggests that they give context to the thing they are about to share. This…
-
Recipe
Audio Option for User Input
A button that allows the users to respond to content with a recording of their own voice.
-
Recipe
Batching Notifications
A method that groups smartphone notifications into scheduled batches, delivered at specific intervals, to reduce distractions and improve…
Contributed by Prosocial Design Network · prosocialdesign.org · CC BY-SA 4.0
Original source: https://www.prosocialdesign.org/library/commitment-pledges
See something to fix or add? Suggest an edit on GitHub — the commons lives in git too, and its history is the changelog.
prosocial-designdesign patternpdn-rating:tentativewhen:proactivecivic-signal:connectcultivate belonging