Policy Brief
Why Collective Behavior Change Requires a Civic Culture Approach
A new policy brief explores how civic culture can reshape social norms, encourage collective action, and drive lasting behavioral change.
Article
Bridging Systems: Open Problems for Countering Destructive Divisiveness across Ranking, Recommenders, and Governance
This working paper aims to articulate an interdisciplinary research and practice area focused around bridging systems.
By:
-
![]()
Aviv Ovadya
-
![]()
Luke Thorburn
Divisiveness appears to be increasing in much of the world. This can lead to concern about political violence and a decreasing capacity to collaboratively address large-scale societal challenges. In this working paper we aim to articulate an interdisciplinary research and practice area focused around what we call bridging systems. These are systems which increase mutual understanding and trust across divides, creating space for productive conflict, deliberation, or cooperation.
We give examples of bridging systems across three domains: recommender systems on social media, software for conducting civic forums, and human-facilitated group deliberation. We argue that these examples can be more meaningfully understood as processes for attention-allocation (as opposed to “content distribution” or “amplification”). Further, we develop a corresponding framework to explore similarities – and opportunities for bridging – across these seemingly disparate domains. In particular, we focus on the potential of bridging-based ranking to bring the benefits of offline bridging into spaces which are already governed by algorithms. Throughout, we suggest research directions that could improve our capacity to incorporate bridging into a world increasingly mediated by algorithms and artificial intelligence.
Related Resources
Commentary
Field Report: How AI Is Being Used in the 2026 Midterms
Allen Lab Policy Fellow Hillary Lehr provides a late-October 2026 snapshot of the multiple ways that AI and the midterms are intersecting, including campaign use cases, policy issues, and voters’ use of LLMs.
Additional Resource