10.7910/DVN/8OYWEV Lyall, Jason Jason Lyall Dartmouth College Harvard Dataverse 2026 Social Sciences Lyall, Jason Jason Lyall Dartmouth College Lyall, Jason Jason Lyall Dartmouth College Nyhan, Brendan Brendan Nyhan Dartmouth College Voytas, Elsa Elsa Voytas Independent Scholar 2026-04-17 2026-04-20 2026-05-11 39724 8651 86883 132579 130833 19541046 1139 115344 25330 750 2285762 71708 7256296 95279 130833 2881 49067 70667 8827 text/tab-separated-values text/comma-separated-values type/x-r-syntax text/comma-separated-values application/pdf application/x-stata-14 type/x-r-syntax text/comma-separated-values text/comma-separated-values text/tab-separated-values text/tab-separated-values text/tab-separated-values application/pdf type/x-r-syntax application/pdf text/tab-separated-values type/x-r-syntax text/tab-separated-values text/markdown 2.0 Creative Commons CC0 1.0 Universal Public Domain Dedication. Replication materials for "Online communitarian appeals increase opposition to violent extremism" (PNAS Nexus 2026). Includes R code for the Facebook analyses and for the online survey as well as the required datasets for all analyses. An English-language version of our survey instrument is also included as well as our full Supplemental Information (SI) document.