Bivalent Impact of Social Networks on Overarming: Model-Based Insights on the Alignment between Social and Individual Interests | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Bivalent Impact of Social Networks on Overarming: Model-Based Insights on the Alignment between Social and Individual Interests Feng Fu, Michael Herron, Dan Rockmore This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-3487266/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract Drawing on evolutionary game theory, we present a stylized, conceptual model of gun acquisition for individuals in a society where all have the right to bear arms. In our dynamic model, pairwise confrontations with attendant payoffs take place between individuals who are either armed or unarmed. Individual payoffs depend on the probability of confrontation, the choice to arm, and the choices of others. We show that the likelihood of confrontation affects the optimal societal arming rate and the arming rate that occurs in equilibrium. The latter quickly surpasses the former as the probability of confrontation increases, a phenomenon we call overarming. This reflects a misalignment of individual and societal interests. We further show that spatial structures can exacerbate overarming, especially when individuals perceive a deteriorating social environment. Our modeling results highlight the importance of understanding how fundamental behavioral dynamics and network heterogeneity influence individual decisions to purchase firearms. Our work offers a theoretical, proof-of-concept framework -- demonstrated through analytical and simulation-based results -- that can inform future empirical research for understanding the dynamics of gun ownership and overarming and help identify potential avenues for effective intervention and policy-making. Physical sciences/Mathematics and computing/Applied mathematics Biological sciences/Evolution/Social evolution firearm violence gun ownership game theory human behavior evolutionary dynamics population structure network effects Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SIv2025Apr30.pdf Supplementary Information for the main text ReportingSummary.pdf Reporting Summary Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-3487266","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":460642688,"identity":"abbb58b0-9f9b-441e-b30c-ab2f067ce46c","order_by":0,"name":"Feng Fu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA6klEQVRIiWNgGAWjYBAC9gYQacMgx3AAKmIAxBL4tPCAVaYxGAO1MIK0SxCtJbGBeC3svYdfMCQcTu87fvb5oxsVh+vMGZgP3ubBp4XnXJoFUEvuzDPphs05Zw5LWDawJVvj02IvkWNmwPjjcO6GA2mMzblthyUMDvCYSeO1Rf6NmQHIYQbnn8G08H/Dr0WCx/gBUEuCwQ2ELWz4tfDkmDEkJKQbzrzxjHF2zpl0yQ2H2Ywt5+DTwn7G+MOHBGt5vvNpDJ9zKqz5DY43P7zxBo8WIGCTSEDhM+NXDlbygbCaUTAKRsEoGNEAAD7FTaSPkPSHAAAAAElFTkSuQmCC","orcid":"https://orcid.org/0000-0001-8252-1990","institution":"Dartmouth College","correspondingAuthor":true,"prefix":"","firstName":"Feng","middleName":"","lastName":"Fu","suffix":""},{"id":460642689,"identity":"8c056310-7be5-4b7c-a835-a0ac61bec8c4","order_by":1,"name":"Michael Herron","email":"","orcid":"","institution":"Dartmouth College","correspondingAuthor":false,"prefix":"","firstName":"Michael","middleName":"","lastName":"Herron","suffix":""},{"id":460642690,"identity":"66876ecb-d276-4a57-a082-c34dc9d71dd8","order_by":2,"name":"Dan Rockmore","email":"","orcid":"","institution":"Dartmouth College","correspondingAuthor":false,"prefix":"","firstName":"Dan","middleName":"","lastName":"Rockmore","suffix":""}],"badges":[],"createdAt":"2023-10-24 18:55:06","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-3487266/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-3487266/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":92267062,"identity":"c08e254b-2b3a-4ebf-b837-372a06767fa9","added_by":"auto","created_at":"2025-09-26 13:47:22","extension":"pdf","order_by":0,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":2331987,"visible":true,"origin":"","legend":"","description":"","filename":"mainsubmissionv2025May3.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3487266/v1/7722361966a8cd1ccee53e28.pdf"},{"id":92267058,"identity":"1dc755ac-a581-4b6c-a8d5-beca4b78d2ff","added_by":"auto","created_at":"2025-09-26 13:47:22","extension":"json","order_by":1,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":4859,"visible":true,"origin":"","legend":"","description":"","filename":"NCOMMS2351190C.json","url":"https://assets-eu.researchsquare.com/files/rs-3487266/v1/3be52222f32138b731d3893c.json"},{"id":92267061,"identity":"439a91e3-afa3-4c1d-baa2-380624ffcccf","added_by":"auto","created_at":"2025-09-26 13:47:22","extension":"pdf","order_by":2,"title":"","display":"","copyAsset":false,"role":"acdc-reference","size":2177998,"visible":true,"origin":"","legend":"","description":"","filename":"SIv2025Apr30.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3487266/v1/0560a944d5c5a281aaf42782.pdf"},{"id":94176383,"identity":"46fcf330-9cac-4cf1-bca3-1412a23d5779","added_by":"auto","created_at":"2025-10-23 08:28:34","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1656449,"visible":true,"origin":"","legend":"Article File","description":"","filename":"mainsubmissionv2025May3.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3487266/v1_covered_8e338502-16b7-4aae-80c6-fcf759cb34bf.pdf"},{"id":92267059,"identity":"0798515b-d9d7-472b-b620-44845bfffddf","added_by":"auto","created_at":"2025-09-26 13:47:22","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"supplement","size":2177998,"visible":true,"origin":"","legend":"Supplementary Information for the main text","description":"","filename":"SIv2025Apr30.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3487266/v1/b0cb54f163f6f3e122657044.pdf"},{"id":92267060,"identity":"a3d8bb27-5cdc-49f9-9f94-727dc126c1f3","added_by":"auto","created_at":"2025-09-26 13:47:22","extension":"pdf","order_by":2,"title":"","display":"","copyAsset":false,"role":"supplement","size":71769,"visible":true,"origin":"","legend":"Reporting Summary","description":"","filename":"ReportingSummary.pdf","url":"https://assets-eu.researchsquare.com/files/rs-3487266/v1/729f055a70db493fe0763116.pdf"}],"financialInterests":"There is \u003cb\u003eNO\u003c/b\u003e Competing Interest.","formattedTitle":"Bivalent Impact of Social Networks on Overarming: Model-Based Insights on the Alignment between Social and Individual Interests","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":true,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"
[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"firearm violence, gun ownership, game theory, human behavior, evolutionary dynamics, population structure, network effects","lastPublishedDoi":"10.21203/rs.3.rs-3487266/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-3487266/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"Drawing on evolutionary game theory, we present a stylized, conceptual model of gun acquisition for individuals in a society where all have the right to bear arms. In our dynamic model, pairwise confrontations with attendant payoffs take place between individuals who are either armed or unarmed. Individual payoffs depend on the probability of confrontation, the choice to arm, and the choices of others. We show that the likelihood of confrontation affects the optimal societal arming rate and the arming rate that occurs in equilibrium. The latter quickly surpasses the former as the probability of confrontation increases, a phenomenon we call overarming. This reflects a misalignment of individual and societal interests. We further show that spatial structures can exacerbate overarming, especially when individuals perceive a deteriorating social environment. Our modeling results highlight the importance of understanding how fundamental behavioral dynamics and network heterogeneity influence individual decisions to purchase firearms. Our work offers a theoretical, proof-of-concept framework -- demonstrated through analytical and simulation-based results -- that can inform future empirical research for understanding the dynamics of gun ownership and overarming and help identify potential avenues for effective intervention and policy-making.","manuscriptTitle":"Bivalent Impact of Social Networks on Overarming: Model-Based Insights on the Alignment between Social and Individual Interests","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-09-26 13:47:17","doi":"10.21203/rs.3.rs-3487266/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"
[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"90564c3d-1833-4e9a-b84d-3df4ca641e83","owner":[],"postedDate":"September 26th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":48932601,"name":"Physical sciences/Mathematics and computing/Applied mathematics"},{"id":48932602,"name":"Biological sciences/Evolution/Social evolution"}],"tags":[],"updatedAt":"2025-10-23T08:20:20+00:00","versionOfRecord":[],"versionCreatedAt":"2025-09-26 13:47:17","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-3487266","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-3487266","identity":"rs-3487266","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}
Text is read by the "Ask this paper" AI Q&A widget below.
Extraction quality varies by source — PMC NXML preserves structure
cleanly, OA-HTML may include some navigation residue, and OA-PDF can
have broken hyphenation. The publisher copy
(via DOI)
is the canonical version.