The Development Gap Ratio: A Novel Framework for Measuring Structural Inequality Between Nations

The Development Gap Ratio: A Novel Framework for Measuring Structural Inequality Between Nations | 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 Research Article The Development Gap Ratio: A Novel Framework for Measuring Structural Inequality Between Nations Aythami Santana This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6505144/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 This study introduces the Development Gap Ratio (DGR)—a novel inequality measure that reconceptualizes between-country inequality as disparities in development capacity rather than merely differences in observed income levels. The DGR quantifies the distance between a country's actual GDP per capita and its potential optimal level given its fundamentals, revealing structural dimensions of global inequality that conventional metrics overlook. Using gradient boosting techniques and analyzing 58 developing countries (2003-2022), we establish the DGR's validity as a meaningful economic indicator and demonstrate how it reveals four distinct development regimes with varying inequality implications. Our findings show that countries with similar income levels often achieve dramatically different percentages of their potential GDP—some realizing less than 50% of their economic potential while others exceed 100%—revealing profound structural inequality in development capacity. By systematically comparing our measure with traditional inequality metrics, we show that the DGR captures a dimension of between-country inequality hidden in conventional analyses, illuminating systematic differences in how effectively nations convert their fundamental characteristics into economic achievements. This reconceptualization challenges orthodox assumptions about the dynamics of global inequality and provides policy makers with a more nuanced framework for addressing structural barriers that perpetuate economic disparities between nations. Between-Country Inequality Inequality of Economic Opportunity Development Capacity Threshold Effects Global Inequality Dynamics Full Text Additional Declarations No competing interests reported. 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-6505144","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":451032869,"identity":"9d5dc40f-839d-47ad-81dd-b09bb756001f","order_by":0,"name":"Aythami Santana","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAABEElEQVRIiWNgGAWjYHACNiCWgPPkGNgJ6mCGa2FsABLGDMzEaWGAa0lsIKSFf0b+sQc/cywY5NvPHn/wc4dd+obDvIdf/GCwscelReJGMrth7zYJBoMzeYmNvWeSczcc5kuz7GFIS2zApedGMpsEL0gLQ45hA28bM1ALj5kxA8PhBFw65IFaJP8Ctcj3vzFs/NtWn24A0fIfp8MMgFqkQbYw3MgxbOZtO5wA1GL8mIHhACMuhxmeeWwmLbtNgsfgxhvD2bJtxw1nAv3C2GOQjNMvcscTn0m+3VYnJ9+fY/DxbVu1PN/x3sMfflTY4XQYgwDEmzxIQjxsoNDADfgPYAjxMH/Ao2EUjIJRMApGHgAAV8tTnouf9L4AAAAASUVORK5CYII=","orcid":"","institution":"University of Las Palmas de Gran Canaria","correspondingAuthor":true,"prefix":"","firstName":"Aythami","middleName":"","lastName":"Santana","suffix":""}],"badges":[],"createdAt":"2025-04-22 14:08:30","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-6505144/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-6505144/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":85869220,"identity":"86e10c3a-ea3d-442e-b10e-1807bfc668b4","added_by":"auto","created_at":"2025-07-02 13:47:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1323984,"visible":true,"origin":"","legend":"","description":"","filename":"DGRpaper1.pdf","url":"https://assets-eu.researchsquare.com/files/rs-6505144/v1_covered_95d128b8-2672-4b30-8dbb-912281328c6d.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"The Development Gap Ratio: A Novel Framework for Measuring Structural Inequality Between Nations","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"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":"Between-Country Inequality, Inequality of Economic Opportunity, Development Capacity, Threshold Effects, Global Inequality Dynamics","lastPublishedDoi":"10.21203/rs.3.rs-6505144/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-6505144/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"This study introduces the Development Gap Ratio (DGR)—a novel inequality measure that reconceptualizes between-country inequality as disparities in development capacity rather than merely differences in observed income levels. 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