{"id":5807,"date":"2018-12-16T13:49:12","date_gmt":"2018-12-16T11:49:12","guid":{"rendered":"https:\/\/gerec.fi\/tutkimus\/terveys-toimintakykyisyys-pitkaikaisyys-ja-biologinen-vanheneminen\/immuunisysteemin-vanheneminen-solu-ja-molekyylitason-mekanismit-mikko-hurme-2\/"},"modified":"2024-06-19T08:42:26","modified_gmt":"2024-06-19T05:42:26","slug":"lapsesta-aikuiseksi-pitkittaistutkimus-laku","status":"publish","type":"page","link":"https:\/\/www.gerec.fi\/en\/research\/lifecourse\/lapsesta-aikuiseksi-pitkittaistutkimus-laku\/","title":{"rendered":"Jyv\u00e4skyl\u00e4 Longitudinal Study of Personality and Social Development (JYLS)","raw":"Jyv\u00e4skyl\u00e4 Longitudinal Study of Personality and Social Development (JYLS)"},"content":{"rendered":"[vc_row][vc_column][vc_column_text]\n<p>&nbsp;<\/p>\n<p>In the Jyv\u00e4skyl\u00e4 Longitudinal Study of Personality and Social Development (JYLS), the development of the same individuals (born in 1959) has been so far followed from age 8 to 61. The latest data collection (2020\u20132021) was part of the \u2018TRAILS\u2019 (Developmental Psychological Perspectives on Transitions at Age 60: Individuals Navigating Across the Lifespan) project led by research director Katja Kokko and funded by the Academy of Finland.<\/p>\n<p>In the latest data collection phase, data were collected using a psychological interview and self-report inventories. Additionally, a medical examination with blood samples, as well as physical activity monitoring were conducted. In this latest phase, the main aim was to explore how retirement or its anticipation, grandparenthood, leisure-time activities and an increased concern over health\u2014in interaction with personality characteristics\u2014link to mental well-being.<\/p>\n<p>Similar to earlier data collection phases, information is gathered, among others, about well-being, personality, work and education, family, leisure time activities, social network, and health and health behaviors. In childhood (at age 8) and adolescence (at age 14) the socioemotional behavior of the participants was assessed by teachers and peers. Data about the childhood school achievement and upbringing environment are also available.<\/p>\n<p>The JYLS data have been used in hundreds of national and international scientific publications, including both journals and books. The JYLS data have been used in 21 doctoral dissertations and dozens of master\u2019s theses. The research themes have been related, for example, to the following: 1) socioemotional behavior and personality from childhood to adulthood, 2) the formation of education and working career, 3) family of origin and one\u2019s own family, 4) health and health behaviors, 5) social adjustment and delinquency, 6) the development of well-being, and 7) mid-life development.<\/p>\n<p>The ongoing JYLS study was initiated at the University of Jyv\u00e4skyl\u00e4 by Lea Pulkkinen in 1968 who led the study until the end of 2012. Since the beginning of 2013, the JYLS has been led by Research Director Katja Kokko.<\/p>\n<p><strong>Funding<\/strong><\/p>\n<p>The main funder of the JYLS has been the Academy of Finland (1974, 1979, 1986-2013, 2019-2023). The ongoing TRAILS data collection is funded through the Academy of Finland research grant (2019\u20132023, grant number 323541).<\/p>\n<p><strong>Further information about the study<\/strong><\/p>\n<p><a href=\"https:\/\/www.jyu.fi\/sport\/en\/research\/research-projects\/jyls\">https:\/\/www.jyu.fi\/sport\/en\/research\/research-projects\/jyls<\/a><br \/>\n<a href=\"https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf\">https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf<\/a><\/p>\n<p>katja.r.kokko@jyu.fi, Principal Investigator, Research Director Katja Kokko, Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyv\u00e4skyl\u00e4.<\/p>\n<p><strong>Selected recent publications<\/strong><\/p>\n<p>Fadjukoff, P., Feldt, T., Kokko, K., &amp; Pulkkinen, L. (2019). Identity status change within personal style clusters: A longitudinal perspective from early adulthood to midlife. Identity: An International Journal of Theory and Research, 19, 1\u201317. doi:10.1080\/15283488.2019.1566066<\/p>\n<p>Karvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2019). Associations of temperament and personality traits with frequency of physical activity in adulthood. Journal of Research in Personality. doi: <a href=\"https:\/\/doi.org\/10.1016\/j.jrp.2019.103887\">10.1016\/j.jrp.2019.103887<\/a><\/p>\n<p>Kek\u00e4l\u00e4inen, T., Freund, A. M., Sipil\u00e4, S., &amp; Kokko, K. (2020). Cross-sectional and longitudinal associations between leisure time physical activity, mental well-being and subjective health in middle adulthood. Applied Research in Quality of Life, 15, 1099\u20131116. doi: <a href=\"https:\/\/link.springer.com\/article\/10.1007%2Fs11482-019-09721-4\">10.1007\/s11482-019-09721-4<\/a><\/p>\n<p>Kek\u00e4l\u00e4inen, T., Karvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2022). Pathways from childhood socioemotional characteristics and cognitive skills to midlife health behaviors. Psychology &amp; Health. doi: 10.1080\/08870446.2022.2041639<\/p>\n<p>Kek\u00e4l\u00e4inen, T., Sipil\u00e4, S., Saajanaho, M., &amp; Kokko, K. (2021). The role of personality traits in leisure time physical activity during the COVID-19 pandemic. Personality and Individual Differences. doi: 10.1016\/j.paid.2021.111080<\/p>\n<p>Kokko, K., &amp; Feldt, T. (2018). Longitudinal profiles of mental well-being as correlates of successful aging in middle age. International Journal of Behavioral Development, 42, 485\u2013495. doi: <a href=\"http:\/\/journals.sagepub.com\/doi\/10.1177\/0165025417739177\">10.1177\/0165025417739177<\/a><\/p>\n<p>Pulkkinen, L. (2017). Human development from middle childhood to middle adulthood: Growing up to be middle-aged. (Yhteisty\u00f6ss\u00e4 Katja Kokon kanssa.) London: Routledge.<\/p>\n<p>Reinil\u00e4, E., Kek\u00e4l\u00e4inen, T., Saajanaho, M., &amp; Kokko, K. (2023). The structure of mental well-being and its relationship with generativity in middle adulthood and the beginning of late adulthood. International Journal of Behavioral Development. doi: 10.1177\/01650254231165837[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false,"raw":"[vc_row][vc_column][vc_column_text]\r\n\r\n&nbsp;\r\n\r\nIn the Jyv\u00e4skyl\u00e4 Longitudinal Study of Personality and Social Development (JYLS), the development of the same individuals (born in 1959) has been so far followed from age 8 to 61. The latest data collection (2020\u20132021) was part of the \u2018TRAILS\u2019 (Developmental Psychological Perspectives on Transitions at Age 60: Individuals Navigating Across the Lifespan) project led by research director Katja Kokko and funded by the Academy of Finland.\r\n\r\nIn the latest data collection phase, data were collected using a psychological interview and self-report inventories. Additionally, a medical examination with blood samples, as well as physical activity monitoring were conducted. In this latest phase, the main aim was to explore how retirement or its anticipation, grandparenthood, leisure-time activities and an increased concern over health\u2014in interaction with personality characteristics\u2014link to mental well-being.\r\n\r\nSimilar to earlier data collection phases, information is gathered, among others, about well-being, personality, work and education, family, leisure time activities, social network, and health and health behaviors. In childhood (at age 8) and adolescence (at age 14) the socioemotional behavior of the participants was assessed by teachers and peers. Data about the childhood school achievement and upbringing environment are also available.\r\n\r\nThe JYLS data have been used in hundreds of national and international scientific publications, including both journals and books. The JYLS data have been used in 21 doctoral dissertations and dozens of master\u2019s theses. The research themes have been related, for example, to the following: 1) socioemotional behavior and personality from childhood to adulthood, 2) the formation of education and working career, 3) family of origin and one\u2019s own family, 4) health and health behaviors, 5) social adjustment and delinquency, 6) the development of well-being, and 7) mid-life development.\r\n\r\nThe ongoing JYLS study was initiated at the University of Jyv\u00e4skyl\u00e4 by Lea Pulkkinen in 1968 who led the study until the end of 2012. Since the beginning of 2013, the JYLS has been led by Research Director Katja Kokko.\r\n\r\n<strong>Funding<\/strong>\r\n\r\nThe main funder of the JYLS has been the Academy of Finland (1974, 1979, 1986-2013, 2019-2023). The ongoing TRAILS data collection is funded through the Academy of Finland research grant (2019\u20132023, grant number 323541).\r\n\r\n<strong>Further information about the study<\/strong>\r\n\r\n<a href=\"https:\/\/www.jyu.fi\/sport\/en\/research\/research-projects\/jyls\">https:\/\/www.jyu.fi\/sport\/en\/research\/research-projects\/jyls<\/a>\r\n<a href=\"https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf\">https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf<\/a>\r\n\r\nkatja.r.kokko@jyu.fi, Principal Investigator, Research Director Katja Kokko, Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyv\u00e4skyl\u00e4.\r\n\r\n<strong>Selected recent publications<\/strong>\r\n\r\nFadjukoff, P., Feldt, T., Kokko, K., &amp; Pulkkinen, L. (2019). Identity status change within personal style clusters: A longitudinal perspective from early adulthood to midlife. Identity: An International Journal of Theory and Research, 19, 1\u201317. doi:10.1080\/15283488.2019.1566066\r\n\r\nKarvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2019). Associations of temperament and personality traits with frequency of physical activity in adulthood. Journal of Research in Personality. doi: <a href=\"https:\/\/doi.org\/10.1016\/j.jrp.2019.103887\">10.1016\/j.jrp.2019.103887<\/a>\r\n\r\nKek\u00e4l\u00e4inen, T., Freund, A. M., Sipil\u00e4, S., &amp; Kokko, K. (2020). Cross-sectional and longitudinal associations between leisure time physical activity, mental well-being and subjective health in middle adulthood. Applied Research in Quality of Life, 15, 1099\u20131116. doi: <a href=\"https:\/\/link.springer.com\/article\/10.1007%2Fs11482-019-09721-4\">10.1007\/s11482-019-09721-4<\/a>\r\n\r\nKek\u00e4l\u00e4inen, T., Karvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2022). Pathways from childhood socioemotional characteristics and cognitive skills to midlife health behaviors. Psychology &amp; Health. doi: 10.1080\/08870446.2022.2041639\r\n\r\nKek\u00e4l\u00e4inen, T., Sipil\u00e4, S., Saajanaho, M., &amp; Kokko, K. (2021). The role of personality traits in leisure time physical activity during the COVID-19 pandemic. Personality and Individual Differences. doi: 10.1016\/j.paid.2021.111080\r\n\r\nKokko, K., &amp; Feldt, T. (2018). Longitudinal profiles of mental well-being as correlates of successful aging in middle age. International Journal of Behavioral Development, 42, 485\u2013495. doi: <a href=\"http:\/\/journals.sagepub.com\/doi\/10.1177\/0165025417739177\">10.1177\/0165025417739177<\/a>\r\n\r\nPulkkinen, L. (2017). Human development from middle childhood to middle adulthood: Growing up to be middle-aged. (Yhteisty\u00f6ss\u00e4 Katja Kokon kanssa.) London: Routledge.\r\n\r\nReinil\u00e4, E., Kek\u00e4l\u00e4inen, T., Saajanaho, M., &amp; Kokko, K. (2023). The structure of mental well-being and its relationship with generativity in middle adulthood and the beginning of late adulthood. International Journal of Behavioral Development. doi: 10.1177\/01650254231165837[\/vc_column_text][\/vc_column][\/vc_row]"},"excerpt":{"rendered":"[vc_row column_spacing=\"50\" bg_style=\"stretch\" css=\".vc_custom_1544814296502{padding-top: 30px !important;padding-bottom: 5px !important;}\"][vc_column][vc_column_text font_size=\"-\"] &nbsp; Lapsesta aikuiseksi -pitkitt\u00e4istutkimus (LAKU; engl. The Jyv\u00e4skyl\u00e4 Longitudinal Study of Personality and Social Development, JYLS) on ainutlaatuisen pitk\u00e4\u00e4n jatkunut samojen ihmisten seurantatutkimus. LAKU-tutkimuksessa on t\u00e4h\u00e4n menness\u00e4 seurattu samojen (v. 1959&hellip;","protected":false,"raw":""},"author":1,"featured_media":0,"parent":5662,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_mi_skip_tracking":false,"_fi_post_content":"[vc_row column_spacing=\"50\" bg_style=\"stretch\" css=\".vc_custom_1544814296502{padding-top: 30px !important;padding-bottom: 5px !important;}\"][vc_column][vc_column_text font_size=\"-\"]\r\n\r\n&nbsp;\r\n\r\nLapsesta aikuiseksi -pitkitt\u00e4istutkimus (LAKU; engl. The Jyv\u00e4skyl\u00e4 Longitudinal Study of Personality and Social Development, JYLS) on ainutlaatuisen pitk\u00e4\u00e4n jatkunut samojen ihmisten seurantatutkimus. LAKU-tutkimuksessa on t\u00e4h\u00e4n menness\u00e4 seurattu samojen (v. 1959 syntyneiden) ihmisten kehityst\u00e4 8-vuotiaasta 61-vuotiaaksi asti. Viimeisin aineistonkeruu toteutettiin 2020\u20132021 osana tutkimusjohtaja Katja Kokon johtamaa TRAILS (Lapsesta aikuiseksi: El\u00e4m\u00e4nkaaren aikana muotoutuvat yksil\u00f6lliset kehityspolut el\u00e4m\u00e4nsiirtymiin 60-vuotiaana) -hankketta, jota rahoittaa Suomen Akatemia.\r\n\r\nViimeisimm\u00e4ss\u00e4 aineistonkeruussa osanottajilta koottiin tietoa psykologisella haastattelulla ja kyselylomakkeilla. Lis\u00e4ksi tutkittavat osallistuivat terveystarkastukseen, antoivat verin\u00e4ytteen ja k\u00e4yttiv\u00e4t liikemittaria. Koronapandemian vuoksi aineistonkeruuta toteutettiin my\u00f6s et\u00e4haastatteluilla ja puhelinterveystarkastuksilla. Aineiston analysointi on nyt ty\u00f6n alla. Erityisen\u00e4 tarkastelun kohteena ovat el\u00e4k\u00f6itymisen tai sen ennakoinnin, ty\u00f6nteon jatkamisen, mahdollisen isovanhemmuuden, terveyden sek\u00e4 vapaa-ajan aktiviteettien yhteydet hyvinvointiin. Kuten aiemmissa aikuisuuden p\u00e4\u00e4aineistonkeruuvaiheissa (27-, 36-, 42- ja 50-v.), tietoa ker\u00e4ttiin kattavasti muun muassa hyvinvoinnista, persoonallisuudesta, ty\u00f6st\u00e4 ja koulutuksesta, perheest\u00e4, vapaa-ajasta ja sosiaalisesta verkostosta sek\u00e4 terveydest\u00e4 ja terveysk\u00e4ytt\u00e4ytymisest\u00e4. Lapsuudessa (8-v.) ja nuoruudessa (14-v.) opettajat ja toverit ovat arvioineet tutkittavien sosiaalista k\u00e4ytt\u00e4ytymist\u00e4. Tietoa on ker\u00e4tty my\u00f6s koulumenestyksest\u00e4 ja lapsuuden kasvuymp\u00e4rist\u00f6st\u00e4.\r\n\r\nLAKU-tutkimuksen aineistoa on k\u00e4ytetty sadoissa tieteellisiss\u00e4 artikkeleissa ja useissa kotimaisissa ja kansainv\u00e4lisiss\u00e4 kirjoissa. Aineistoa on hy\u00f6dynnetty 21 v\u00e4it\u00f6skirjassa ja kymmeniss\u00e4 pro gradu -tutkielmissa. Tutkimusaiheet ovat liittyneet esimerkiksi 1) persoonallisuuden kehittymiseen lapsuudesta aikuisuuteen, 2) ty\u00f6- ja koulutusuran muotoutumiseen, 3) lapsuudenperheeseen ja tutkittavien omaan perheeseen, 4) terveyteen ja terveysk\u00e4ytt\u00e4ytymiseen, 5) yhteiskuntaan j\u00e4sentymiseen, 6) hyvinvoinnin rakentumiseen ja 7) keskiaikuisi\u00e4n kehitykseen. N\u00e4iden eri alueiden vuorovaikutus on ollut my\u00f6s kiinnostuksen kohteena.\r\n\r\nProfessori Lea Pulkkinen aloitti LAKU-tutkimuksen vuonna 1968 ja johti sit\u00e4 vuoteen 2012 asti. Vuoden 2013 alusta alkaen tutkimusta on johtanut tutkimusjohtaja Katja Kokko.\r\n\r\n<strong>Tutkimuksen rahoittaja<\/strong>\r\n\r\nLAKU-tutkimuksen p\u00e4\u00e4rahoittaja on ollut Suomen Akatemia (1974, 1979, 1986-2013, 2019-2023). Viimeisin aineistonkeruu toteutettiin Suomen Akatemian TRAILS-hankkeelle my\u00f6nt\u00e4m\u00e4ll\u00e4 tutkimusrahoituksella (2019\u20132023, p\u00e4\u00e4t\u00f6snumero 323541).\r\n\r\n<strong>Lis\u00e4tietoa tutkimuksesta<\/strong>\r\n\r\n<a href=\"https:\/\/www.jyu.fi\/sport\/fi\/tutkimus\/hankkeet\/laku\">https:\/\/www.jyu.fi\/sport\/fi\/tutkimus\/hankkeet\/laku<\/a>\r\n<a href=\"https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf\">https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf<\/a>\r\n\r\nkatja.r.kokko@jyu.fi, vastuullinen tutkija, tutkimusjohtaja Katja Kokko, Gerontologian tutkimuskeskus ja liikuntatieteellinen tiedekunta, Jyv\u00e4skyl\u00e4n yliopisto.\r\n\r\n<strong>Valikoituja viimeaikaisia julkaisuja<\/strong>\r\n\r\nFadjukoff, P., Feldt, T., Kokko, K., &amp; Pulkkinen, L. (2019). Identity status change within personal style clusters: A longitudinal perspective from early adulthood to midlife. Identity: An International Journal of Theory and Research, 19, 1\u201317. doi:10.1080\/15283488.2019.1566066\r\n\r\nKarvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2019). Associations of temperament and personality traits with frequency of physical activity in adulthood. Journal of Research in Personality. doi: <a href=\"https:\/\/doi.org\/10.1016\/j.jrp.2019.103887\">10.1016\/j.jrp.2019.103887<\/a>\r\n\r\nKek\u00e4l\u00e4inen, T., Freund, A. M., Sipil\u00e4, S., &amp; Kokko, K. (2020). Cross-sectional and longitudinal associations between leisure time physical activity, mental well-being and subjective health in middle adulthood. Applied Research in Quality of Life, 15, 1099\u20131116. doi: <a href=\"https:\/\/link.springer.com\/article\/10.1007%2Fs11482-019-09721-4\">10.1007\/s11482-019-09721-4<\/a>\r\n\r\nKek\u00e4l\u00e4inen, T., Karvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2022). Pathways from childhood socioemotional characteristics and cognitive skills to midlife health behaviors. Psychology &amp; Health. doi: 10.1080\/08870446.2022.2041639\r\n\r\nKek\u00e4l\u00e4inen, T., Sipil\u00e4, S., Saajanaho, M., &amp; Kokko, K. (2021). The role of personality traits in leisure time physical activity during the COVID-19 pandemic. Personality and Individual Differences. doi: 10.1016\/j.paid.2021.111080\r\n\r\nKokko, K., &amp; Feldt, T. (2018). Longitudinal profiles of mental well-being as correlates of successful aging in middle age. International Journal of Behavioral Development, 42, 485\u2013495. doi: <a href=\"http:\/\/journals.sagepub.com\/doi\/10.1177\/0165025417739177\">10.1177\/0165025417739177<\/a>\r\n\r\nPulkkinen, L. (2017). Human development from middle childhood to middle adulthood: Growing up to be middle-aged. (Yhteisty\u00f6ss\u00e4 Katja Kokon kanssa.) London: Routledge.\r\n\r\nSaajanaho, M., Kek\u00e4l\u00e4inen, T., Reinil\u00e4, E., Ahola, J. &amp; Kokko K. (2021). Lapsesta aikuiseksi: El\u00e4m\u00e4nkaaren aikana muotoutuvat yksil\u00f6lliset kehityspolut el\u00e4m\u00e4nsiirtymiin 60-vuotiaana. Koottuja tutkimustuloksia. Vihkonen on vapaasti luettavissa seuraavasta linkist\u00e4:<a href=\"https:\/\/www.jyu.fi\/sport\/fi\/tutkimus\/hankkeet\/laku\/julkaisut\/trails_kootut-tulokset.pdf\"> TRAILS kootut tulokset<\/a>\r\n\r\nReinil\u00e4, E., Kek\u00e4l\u00e4inen, T., Saajanaho, M., &amp; Kokko, K. (2023). The structure of mental well-being and its relationship with generativity in middle adulthood and the beginning of late adulthood. International Journal of Behavioral Development. doi: 10.1177\/01650254231165837[\/vc_column_text][\/vc_column][\/vc_row]","_fi_post_name":"lapsesta-aikuiseksi-pitkittaistutkimus-laku-katja-kokko","_fi_post_excerpt":"","_fi_post_title":"Lapsesta aikuiseksi -pitkitt\u00e4istutkimus (LAKU)","_en_post_content":"[vc_row][vc_column][vc_column_text]\r\n\r\n&nbsp;\r\n\r\nIn the Jyv\u00e4skyl\u00e4 Longitudinal Study of Personality and Social Development (JYLS), the development of the same individuals (born in 1959) has been so far followed from age 8 to 61. The latest data collection (2020\u20132021) was part of the \u2018TRAILS\u2019 (Developmental Psychological Perspectives on Transitions at Age 60: Individuals Navigating Across the Lifespan) project led by research director Katja Kokko and funded by the Academy of Finland.\r\n\r\nIn the latest data collection phase, data were collected using a psychological interview and self-report inventories. Additionally, a medical examination with blood samples, as well as physical activity monitoring were conducted. In this latest phase, the main aim was to explore how retirement or its anticipation, grandparenthood, leisure-time activities and an increased concern over health\u2014in interaction with personality characteristics\u2014link to mental well-being.\r\n\r\nSimilar to earlier data collection phases, information is gathered, among others, about well-being, personality, work and education, family, leisure time activities, social network, and health and health behaviors. In childhood (at age 8) and adolescence (at age 14) the socioemotional behavior of the participants was assessed by teachers and peers. Data about the childhood school achievement and upbringing environment are also available.\r\n\r\nThe JYLS data have been used in hundreds of national and international scientific publications, including both journals and books. The JYLS data have been used in 21 doctoral dissertations and dozens of master\u2019s theses. The research themes have been related, for example, to the following: 1) socioemotional behavior and personality from childhood to adulthood, 2) the formation of education and working career, 3) family of origin and one\u2019s own family, 4) health and health behaviors, 5) social adjustment and delinquency, 6) the development of well-being, and 7) mid-life development.\r\n\r\nThe ongoing JYLS study was initiated at the University of Jyv\u00e4skyl\u00e4 by Lea Pulkkinen in 1968 who led the study until the end of 2012. Since the beginning of 2013, the JYLS has been led by Research Director Katja Kokko.\r\n\r\n<strong>Funding<\/strong>\r\n\r\nThe main funder of the JYLS has been the Academy of Finland (1974, 1979, 1986-2013, 2019-2023). The ongoing TRAILS data collection is funded through the Academy of Finland research grant (2019\u20132023, grant number 323541).\r\n\r\n<strong>Further information about the study<\/strong>\r\n\r\n<a href=\"https:\/\/www.jyu.fi\/sport\/en\/research\/research-projects\/jyls\">https:\/\/www.jyu.fi\/sport\/en\/research\/research-projects\/jyls<\/a>\r\n<a href=\"https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf\">https:\/\/services.fsd.uta.fi\/catalogue\/FSD2059\/PIP\/LAKU_JYLS_MethodsTable_2017.pdf<\/a>\r\n\r\nkatja.r.kokko@jyu.fi, Principal Investigator, Research Director Katja Kokko, Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyv\u00e4skyl\u00e4.\r\n\r\n<strong>Selected recent publications<\/strong>\r\n\r\nFadjukoff, P., Feldt, T., Kokko, K., &amp; Pulkkinen, L. (2019). Identity status change within personal style clusters: A longitudinal perspective from early adulthood to midlife. Identity: An International Journal of Theory and Research, 19, 1\u201317. doi:10.1080\/15283488.2019.1566066\r\n\r\nKarvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2019). Associations of temperament and personality traits with frequency of physical activity in adulthood. Journal of Research in Personality. doi: <a href=\"https:\/\/doi.org\/10.1016\/j.jrp.2019.103887\">10.1016\/j.jrp.2019.103887<\/a>\r\n\r\nKek\u00e4l\u00e4inen, T., Freund, A. M., Sipil\u00e4, S., &amp; Kokko, K. (2020). Cross-sectional and longitudinal associations between leisure time physical activity, mental well-being and subjective health in middle adulthood. Applied Research in Quality of Life, 15, 1099\u20131116. doi: <a href=\"https:\/\/link.springer.com\/article\/10.1007%2Fs11482-019-09721-4\">10.1007\/s11482-019-09721-4<\/a>\r\n\r\nKek\u00e4l\u00e4inen, T., Karvonen, J., T\u00f6rm\u00e4kangas, T., Pulkkinen, L., &amp; Kokko, K. (2022). Pathways from childhood socioemotional characteristics and cognitive skills to midlife health behaviors. Psychology &amp; Health. doi: 10.1080\/08870446.2022.2041639\r\n\r\nKek\u00e4l\u00e4inen, T., Sipil\u00e4, S., Saajanaho, M., &amp; Kokko, K. (2021). The role of personality traits in leisure time physical activity during the COVID-19 pandemic. Personality and Individual Differences. doi: 10.1016\/j.paid.2021.111080\r\n\r\nKokko, K., &amp; Feldt, T. (2018). Longitudinal profiles of mental well-being as correlates of successful aging in middle age. International Journal of Behavioral Development, 42, 485\u2013495. doi: <a href=\"http:\/\/journals.sagepub.com\/doi\/10.1177\/0165025417739177\">10.1177\/0165025417739177<\/a>\r\n\r\nPulkkinen, L. (2017). Human development from middle childhood to middle adulthood: Growing up to be middle-aged. (Yhteisty\u00f6ss\u00e4 Katja Kokon kanssa.) London: Routledge.\r\n\r\nReinil\u00e4, E., Kek\u00e4l\u00e4inen, T., Saajanaho, M., &amp; Kokko, K. (2023). The structure of mental well-being and its relationship with generativity in middle adulthood and the beginning of late adulthood. 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