{"id":4390,"date":"2026-04-20T13:53:04","date_gmt":"2026-04-20T11:53:04","guid":{"rendered":"https:\/\/cpp.amu.edu.pl\/?p=4390"},"modified":"2026-05-07T21:02:39","modified_gmt":"2026-05-07T19:02:39","slug":"marek-kwiek-had-a-seminar-at-the-university-of-oxford-cghe-about-lifetime-science-career-trajectories","status":"publish","type":"post","link":"https:\/\/cpp.amu.edu.pl\/pl\/marek-kwiek-had-a-seminar-at-the-university-of-oxford-cghe-about-lifetime-science-career-trajectories\/","title":{"rendered":"Marek Kwiek poprowadzi\u0142 seminarium na University of Oxford (CGHE) o trajektoriach karier naukowych"},"content":{"rendered":"<p>Marek Kwiek had a seminar at the University of Oxford (CGHE) about lifetime science career trajectories on April 14, 2026.<\/p>\n<p>The seminar was about &#8222;<a href=\"https:\/\/www.researchcghe.org\/events\/surprising-patterns-of-changing-productivity-classes-a-longitudinal-study-of-320000-scientists\/\">Surprising Patterns of Changing Productivity Classes. A Longitudinal Study of 320,000 Scientists&#8221;<\/a>.\u00a0<\/p>\n<p><a href=\"https:\/\/www.researchcghe.org\/events\/surprising-patterns-of-changing-productivity-classes-a-longitudinal-study-of-320000-scientists\/\">https:\/\/www.researchcghe.org\/events\/surprising-patterns-of-changing-productivity-classes-a-longitudinal-study-of-320000-scientists\/<\/a><\/p>\n<p><strong>Abstract<\/strong><\/p>\n<p>The present study focuses on persistence in research productivity over the course of an individual\u2019s entire scientific career. We track \u201clate-career\u201d scientists\u2014scientists with at least 25 years of publishing experience (<em>N<\/em>\u00a0= 320,564)\u2014in 16 STEMM (science, technology, engineering, mathematics, and medicine) and social science disciplines from 38 OECD countries for up to 5 decades. Our OECD sample includes 79.42% of late-career scientists globally. We examine the details of their mobility patterns as early-career, midcareer, and late-career scientists between decile-based productivity classes, from the bottom 10% to the top 10% of the productivity distribution. Methodologically, we turn a large-scale bibliometric data set (Scopus raw data) into a comprehensive, longitudinal data source for research on careers in science. The global science system is highly immobile: Half of global top performers continue their careers as top performers and one-third of global bottom performers as bottom performers. Jumpers-Up and Droppers-Down are extremely rare in science. The chances of moving radically up or down in productivity classes are marginal (1% or less). Our regression analyses show that productivity classes are highly path-dependent: There is a single most important predictor of being a top performer, which is being a top performer at an earlier career stage.<\/p>\n<div>The seminar was based on recent research: Marek Kwiek<span class=\"al-author-delim\">,\u00a0<\/span>Lukasz Szymula; <a href=\"https:\/\/direct.mit.edu\/qss\/article\/doi\/10.1162\/QSS.a.16\/132193\">Quantifying lifetime productivity changes: A longitudinal study of 320,000 late-career scientists<\/a>.\u00a0<em>Quantitative Science Studies<\/em>\u00a02025; 6 1002\u20131038. doi:\u00a0<a href=\"https:\/\/doi.org\/10.1162\/QSS.a.16\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1162\/QSS.a.16<\/a><\/div>\n<div class=\"name text-6\">\u00a0<\/div>\n<div>The paper is also <a href=\"https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/Kwiek_Szymula_QSS_2025.pdf\">available in PDF here.<\/a><\/div>\n<div class=\"bio text-grey text-3\">\n<p>Marek Kwiek<strong>,<\/strong>\u00a0professor and chairholder, UNESCO Chair in Institutional Research and Higher Education Policy, University of Poznan, Poland. A Visiting Researcher at the German Center for Higher Education Research and Science Studies (DZHW) in Berlin in 2022-2024. His research area is quantitative studies of science and sociology of science; and his current\u00a0 focus is on women in science, social stratification in science, and global academic elites. His recent articles are in \u201cHigher Education\u201d, \u201cStudies in Higher Education\u201d, \u201cQuantitative Science Studies\u201d, \u201cJournal of Informetrics\u201d and \u201cScientometrics\u201d. His work on attrition and retention in global science was recently featured in \u201cNature News\u201d (2024, 2025). An international expert for the European Commission, USAID, OECD,\u00a0 World Bank, UNESCO, Council of Europe, and numerous national governments. An ordinary member of the European Academy of Sciences and Arts (EASA) in Salzburg and\u00a0<em>Academia Europaea<\/em>\u00a0in London, the European Academy of Sciences. He belongs to the top 2% of most highly cited researchers.<\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-4388\" src=\"https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/centre-global-higher-education_1-300x300.png\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/centre-global-higher-education_1-300x300.png 300w, https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/centre-global-higher-education_1-150x150.png 150w, https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/centre-global-higher-education_1-48x48.png 48w, https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/centre-global-higher-education_1-250x250.png 250w, https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/centre-global-higher-education_1-180x180.png 180w, https:\/\/cpp.amu.edu.pl\/wp-content\/uploads\/2026\/05\/centre-global-higher-education_1.png 440w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Marek Kwiek had a seminar at the University of Oxford (CGHE) about lifetime science career trajectories on April 14, 2026. The seminar was about &#8222;Surprising Patterns of Changing Productivity Classes. A Longitudinal Study of 320,000 Scientists&#8221;.\u00a0 https:\/\/www.researchcghe.org\/events\/surprising-patterns-of-changing-productivity-classes-a-longitudinal-study-of-320000-scientists\/ Abstract The present study focuses on persistence in research productivity over the course of an individual\u2019s entire scientific [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":4392,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_links_to":"","_links_to_target":""},"categories":[27],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Marek Kwiek poprowadzi\u0142 seminarium na University of Oxford (CGHE) o trajektoriach karier naukowych<\/title>\n<meta name=\"description\" content=\"Marek Kwiek at the University of Oxford talking about his research research: Marek Kwiek, Lukasz Szymula; Quantifying lifetime productivity changes: A longitudinal study of 320,000 late-career scientists. 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