{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,24]],"date-time":"2026-06-24T07:43:06Z","timestamp":1782286986918,"version":"3.54.5"},"reference-count":26,"publisher":"Cambridge University Press (CUP)","issue":"4-5","license":[{"start":{"date-parts":[[2023,8,29]],"date-time":"2023-08-29T00:00:00Z","timestamp":1693267200000},"content-version":"unspecified","delay-in-days":28,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Twin Res Hum Genet"],"published-print":{"date-parts":[[2023,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The 18th International Society for Twin Studies convention took place between June 15\u221217, 2023, in Budapest, Hungary. A selective sampling of highlights from the meeting are presented. This is followed by a brief overview of ongoing twin research at the University of Aberystwyth in Wales and some twin treasures in the National Library. Next, reviews of timely research that examine temperamental similarities and twin relations, the maximization of twin research designs, a rare ectopic twin pregnancy, and twins\u2019 academic self-concept formation are presented. The final section covers stories appearing in various media sources that are informative, enlightening, and interesting, namely a reunion of identical infant twins, the birth of identical-fraternal quadruplets, identical twin comedians, meeting an unrelated look-alike, and twins in the Tour de France.<\/jats:p>","DOI":"10.1017\/thg.2023.31","type":"journal-article","created":{"date-parts":[[2023,8,29]],"date-time":"2023-08-29T06:34:25Z","timestamp":1693290865000},"page":"320-325","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":2,"title":["The 18th International Twin Congress, and a Look at Twin Research in Wales\/Twin Research Reviews: Temperamental Similarities and Twin Relations; Maximizing Twin Designs; Rare Tubal Ectopic Pregnancy; Twins\u2019 Academic Self-Concept Formation\/In the Media: Identical Infant Twins Reunited; Birth of Identical-Fraternal Quadruplets; Identical Twin Comedians; \u2018Twice in a Lifetime\u2019: Meeting an Unrelated Look-Alike; Twins in the Tour de France"],"prefix":"10.1017","volume":"26","author":[{"given":"Nancy L.","family":"Segal","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2023,8,29]]},"reference":[{"key":"S1832427423000312_ref10","unstructured":"Lee, A. 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Molar pregnancy. https:\/\/my.clevelandclinic.org\/health\/diseases\/17889-molar-pregnancy"},{"key":"S1832427423000312_ref18","volume-title":"Indivisible by two: Lives of extraordinary twins","author":"Segal","year":"2005"},{"key":"S1832427423000312_ref19","volume-title":"Twin mythconceptions: False beliefs, and facts about twins","author":"Segal","year":"2017"},{"key":"S1832427423000312_ref26","unstructured":"Yu, Y.-J. (May 7, 2023). Baby girl meets identical twin sister for 1st time. ABC News. https:\/\/abcnews.go.com\/GMA\/Family\/video\/identical-twin-sisters-meet-1st-time-1-year-98843847"},{"key":"S1832427423000312_ref1","unstructured":"Associated Press. (July 1, 2023). British twins open Tour de France with 1-2 finish in Spain. https:\/\/www.timesfreepress.com\/news\/2023\/jul\/01\/british-twins-open-tour-de-france-with-1-2-finish\/"},{"key":"S1832427423000312_ref2","unstructured":"Chisholm, H. (1911). Valentine and Orson. 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The Guardian. https:\/\/www.theguardian.com\/artanddesign\/2023\/jun\/11\/twice-in-a-lifetime-would-you-dare-meet-your-doppelganger-"},{"key":"S1832427423000312_ref17","volume-title":"Entwined lives: Twins and what they tell us about human behavior","author":"Segal","year":"2000"},{"key":"S1832427423000312_ref24","doi-asserted-by":"publisher","DOI":"10.1038\/s41467-021-25583-7"},{"key":"S1832427423000312_ref20","doi-asserted-by":"publisher","DOI":"10.1017\/thg.2018.74"},{"key":"S1832427423000312_ref5","unstructured":"Gates, K. (May 15, 2023). Family welcomes \u2018spontaneous\u2019 quadruplets, two sets of identical twins. https:\/\/wptv.com\/family-welcomes-spontaneous-quadruplets-two-sets-of-identical-twins"},{"key":"S1832427423000312_ref9","doi-asserted-by":"publisher","DOI":"10.1016\/j.cedpsych.2022.102138"},{"key":"S1832427423000312_ref13","unstructured":"Medline. (2023). 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