{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T14:09:29Z","timestamp":1788876569327,"version":"build-2803163510"},"reference-count":53,"publisher":"Oxford University Press (OUP)","issue":"9","license":[{"start":{"date-parts":[[2026,6,21]],"date-time":"2026-06-21T00:00:00Z","timestamp":1782000000000},"content-version":"vor","delay-in-days":1,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"the Alli Paasikivi Foundation"},{"name":"the Strategic Research Council of the Research Council of Finland"},{"name":"the NetResilience consortium","award":["364371"],"award-info":[{"award-number":["364371"]}]},{"name":"the Research Council of Finland","award":["338869"],"award-info":[{"award-number":["338869"]}]},{"name":"the European Research Council under the European Union\u2019s Horizon 2020 research and innovation programme","award":["740113"],"award-info":[{"award-number":["740113"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>As people have fewer children and remain single, siblings may become more active in family networks of older adults who lack a partner, children, or both\u2014referred to as \u201ccore-kinless.\u201d This study examines the association between the absence of children and\/or a partner and the exchange of support between siblings and how intragenerational geographic proximity shapes these associations, addressing both giving and receiving practical help and giving personal care.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Data from the Generational Transmissions in Finland project (adults aged 78\u201374 in 2018 and their siblings), linked with register data, were analyzed using multilevel ordinal logistic regressions to examine the frequency of giving and receiving practical help, and logistic regressions providing personal care.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Siblings were found to be active supporters in later life. Partnerless older adults\u2014particularly never married\u2014were more likely to receive practical help from siblings than those with partners. Childlessness alone did not increase sibling support, but core-kinless older adults received the highest levels of help and provided more assistance and personal care to siblings, even across long distances. Geographic proximity strengthened support exchanges, but core-kinlessness remained a strong predictor of support exchange regardless of distance. Finally, a 10\u2009km threshold seems adequate for approximating help and care exchanges between siblings.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>Findings highlight siblings\u2019 role as a compensatory source of support in later life, especially if they are core-kinless. Future research and policy should broaden caregiving definitions to include siblings and recognize core-kinless older adults as an underappreciated resource of help and care within family networks.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/geronb\/gbag108","type":"journal-article","created":{"date-parts":[[2026,6,16]],"date-time":"2026-06-16T12:24:48Z","timestamp":1781612688000},"source":"Crossref","is-referenced-by-count":1,"title":["Support exchange between siblings in later life: the role of \u201ccore-kinlessness\u201d and geographic proximity"],"prefix":"10.1093","volume":"81","author":[{"given":"Alyona","family":"Artamonova","sequence":"first","affiliation":[{"name":"INVEST Research Flagship Centre, University of Turku , Turku,","place":["Finland"]},{"name":"Population Research Institute, V\u00e4est\u00f6liitto , Helsinki,","place":["Finland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Clara H","family":"Mulder","sequence":"additional","affiliation":[{"name":"Faculty of Spatial Sciences, University of Groningen , Groningen,","place":["The Netherlands"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8547-9502","authenticated-orcid":false,"given":"Mirkka","family":"Danielsbacka","sequence":"additional","affiliation":[{"name":"INVEST Research Flagship Centre, University of Turku , Turku,","place":["Finland"]},{"name":"Population Research Institute, V\u00e4est\u00f6liitto , Helsinki,","place":["Finland"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antti O","family":"Tanskanen","sequence":"additional","affiliation":[{"name":"Population Research Institute, V\u00e4est\u00f6liitto , Helsinki,","place":["Finland"]},{"name":"Department of Social Research, University of Turku , Turku,","place":["Finland"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,6,20]]},"reference":[{"key":"2026080509514500500_gbag108-B1","doi-asserted-by":"publisher","first-page":"1336","DOI":"10.1093\/geronb\/gbac011","article-title":"Older adults\u2019 internal migration toward faraway siblings","volume":"77","author":"Artamonova","year":"2022","journal-title":"The Journals of Gerontology, Series B: Psychological Sciences and Social Sciences"},{"key":"2026080509514500500_gbag108-B2","doi-asserted-by":"publisher","first-page":"143","DOI":"10.4054\/DemRes.2023.49.7","article-title":"Geographic proximity to siblings in older adulthood","volume":"49","author":"Artamonova","year":"2023","journal-title":"Demographic Research"},{"key":"2026080509514500500_gbag108-B3","doi-asserted-by":"publisher","first-page":"45","DOI":"10.1177\/0002764289033001005","article-title":"The social support functions of siblings in later life: A theoretical model","volume":"33","author":"Avioli","year":"1989","journal-title":"American Behavioral Scientist"},{"key":"2026080509514500500_gbag108-B4","doi-asserted-by":"publisher","first-page":"585","DOI":"10.1093\/esr\/jcn076","article-title":"Intergenerational help and care in Europe","volume":"25","author":"Brandt","year":"2009","journal-title":"European Sociological Review"},{"key":"2026080509514500500_gbag108-B5","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-030-55985-4","volume-title":"Brothers and sisters: Sibling relationships across the life course","author":"Buchanan","year":"2021"},{"key":"2026080509514500500_gbag108-B6","doi-asserted-by":"publisher","first-page":"337","DOI":"10.1093\/geront\/31.3.337","article-title":"Family and community: Changing roles in an aging society","volume":"31","author":"Cantor","year":"1991","journal-title":"The Gerontologist"},{"key":"2026080509514500500_gbag108-B7","doi-asserted-by":"publisher","first-page":"101295","DOI":"10.1016\/j.lanepe.2025.101295","article-title":"The burden of informal family caregiving in Europe, 2000-2050: A microsimulation modelling study","volume":"53","author":"Cattaneo","year":"2025","journal-title":"The Lancet Regional Health. 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