Här kan man lyssna på ny forskning om vilka åldrar och årskullar som drivit de senaste 10 årens nedgång i barnafödande. kvartal.se/denstoralard...
Ingen kris i befolkningsfrågan – Kvartal
Demografen Martin Kolk är inte orolig.
kvartal.se
Martin Kolk
@martinkolk.bsky.social
Demographer at Stockholm University and the Institute for Future Studies. https://www.su.se/profiles/mkolk
Det här är konsekvensen av vår nuvarande regerings 4-åriga politik med subventioner av bensinbilar sedan valet i slutet av 2022. Andra vägval hade varit möjliga. Data från: theicct.org/publication/...
Childhood in Sweden is really becoming dramatically stratified. Household-equivalized disposable income among children (0-18) in Sweden. The poverty threshold is 60% of the median income in 2022. A novel visualization by Aradhya, @rafgrotti.bsky.social, @rnieuwenhuis.bsky.social t.co/WwWBKcO5O4
My second PhD paper is out! 🎉 'Assessing the Agreement Between Microsimulated and Register-Based Kin Counts in Sweden',with @demography.bsky.social , @martinkolk.bsky.social & @ezagheni.bsky.social @mpidr.bsky.social @suda-sthlm.bsky.social 🔗 tandfonline.com/doi/full/10.1080/00324728.2026.2706778
Assessing the agreement between microsimulated and register-based kin counts in Sweden
Estimating kinship networks is a data-intensive undertaking, usually conducted using empirical sources or demographic models. Although empirical data, such as population registers, provide observed...
tandfonline.com
What does the current fertility decline in Sweden look like from a cohort perspective? See my new preprint that shows that fertility decline is modest for 1985 to 1992 cohorts, though is more dramatic at younger ages in later cohorts. doi.org/10.17045/sth...
Examining the 2010-2024 Fertility Decline in Sweden From a Cohort Perspective
This article examines the fertility downturn in Sweden from 2010 to 2024 from a cohort perspective, in contrast to the period-based analyses that have dominated most research on the current decline. Using fertility data from the Human Fertility Database, I analyze the childbearing of Swedish women born in the 1960s, 1970s, 1980s, 1990s, and early 2000s across their observed life courses. The analysis compares cohort fertility schedules by age, period, and cohort, contrasts the 2010-2024 decline with the downturn of 1995-2002, and uses a basic freeze-rate approach to update earlier cohort forecasts for younger cohorts. The results show that the recent sharp fall in period fertility was only moderately reflected in cohort fertility up through the 1980s cohorts, whose fertility remained relatively close to that of women born in the 1970s. By contrast, women born in the 1990s, and especially the late-1990s cohorts, have accumulated markedly fewer first births by young adult ages. Much of the current decline is driven mainly by missing and postponed first births among the 1990s cohorts. The eventual completed fertility of women now in their twenties will therefore depend heavily on the extent of later recuperation. One cannot yet say if the 2010s fertility decline will lead to a marked reduction in cohort fertility in Sweden.
doi.org
Does the wealthy have more children❓ New Swedish register evidence shows only modest fertility gaps by wealth, but higher wealth among the childless, in particular among childless women - by @martinkolk.bsky.social 🔗 link.springer.com/article/10.1...
How is wealth related to fertility? In contrast to an emerging positive association between income and fertility in the Nordics, wealth has its own (mostly) negative association with fertility. In particular, childless women have more wealth than their parous peers. doi.org/10.1186/s411...
Nu kan du göra egna analyser av Levnadsnivåundersökningen (LNU). Skapa diagram, följ förändringar över tid och ladda ner data direkt. Ett värdefullt verktyg och ett enkelt sätt att arbeta med en av Sveriges viktigaste datakällor om levnadsförhållanden. levnadsnivaundersokningen.se
LNU-visualiseringar
levnadsnivaundersokningen.se
@unil.bsky.social will host the LIVES International Research Days in Lausanne on 4-5 November 2026. Please do submit your work to our panel on family complexities, social policies, and social stratification, with @martinkolk.bsky.social and @rossellaciccia.bsky.social as experts. It'll be lovely!
LIVES International Research Days 2026 | Centre LIVES
centre-lives.ch
Yours truly presented work with @martinhallsten.bsky.social and @martinkolk.bsky.social on elites and their historical persistence in Sweden
Thank you, Agnieszka Chłoń-Domińczak and SGH Warsaw School of Economics for hosting the 4th NDC Conference Presented joint work with Linda Kridahl and @martinkolk.bsky.social on “Family life trajectories and old-age poverty in Sweden: The role of NDC pensions and other pension schemes”
Bra illustration av riskerna med moderna survey-insamlingsmetoder när man studerar trender i mindre undergrupper. Bra att hålla ögonen på de större mönstren, när man till exempel studerar den numera ofta påstådda nyandligheten. www.bbc.com/news/article... yougov.com/en-gb/articl...
Church attendance report pulled after YouGov finds 'fraudulent' responses
The original report claimed a rise in young people attending church in England and Wales.
bbc.com
Mer om religion. Första artikeln väckte ordentligt intresse, med fem repliker. Här svarar jag. www.dn.se/kultur/marti...
Martin Kolk: Joel Halldorfs trendspaning håller säkert i församlingarna på Södermalm
En mindre medlemsökning i Svenska kyrkan förklaras i huvudsak av tonåringar som går runt konfirmationen – den är inget stöd för en religiös ungdomstrend.
dn.se
Martin Kolk@martinkolk.bsky.social · 11mo agoLäs mitt inlägg om sekulariseringstrender på DN kulturdebatt idag. www.dn.se/kultur/marti...
Läs mitt inlägg om sekulariseringstrender på DN kulturdebatt idag. www.dn.se/kultur/marti...
Martin Kolk: Ni talar om en kyrktrend bland unga – men den stämmer inte
Forskaren Martin Kolk granskar påståendet om en religiös återkomst bland unga i Sverige.
dn.se
Här kan man se en diskussion om barnafödande i SVTs kulturnyheter, där det vrids och vänds på sjunkande barnafödande i olika perspektiv. www.svtplay.se/video/KZmQoQ...
Kulturnyheterna special: En framtid utan barn
Sverige har idag de lägsta födelsetalen sedan 1751 och regeringen har tillsatt en utredning för att svara på varför. Men även runt om i världen sjunker födelsetalen. Handlar det om politik, teknik, in...
svtplay.se
In our new study in Population and Environment, we examine how environmental concerns shape public attitudes toward childbearing in Sweden. We find views linking environmental concerns with reproduction are widespread, even if we find less support that they affect behavior. doi.org/10.1007/s111...
Sweden reached near gender parity in employment in the late 1980s, and if anything, the gender gap has increased since then. There used to be near-universal employment among Swedish men, with Swedish women nearly catching up in the 1980s. Swedish labor force survey, age 35-44.
I dag publicerades min artikel på DN Debatt där jag argumenterar för en höjning, och beskattning av barnbidraget, baserat på att vi ser ökade socioekonomiska skillnader i föräldraskap. www.dn.se/debatt/hoj-b...
DN Debatt. ”Höj barnbidraget – unga familjer måste prioriteras”
DN Debatt. I takt med att barnafödandet minskar bör barnbidraget höjas och göras skattepliktigt, skriver Martin Kolk, docent i demografi.
dn.se
Se en ny artikel i Svenska Dagbladet där jag intervjuades om huruvida de senaste 10-årens sjunkande barnafödande är ett socioekonomiskt problem eller inte. www.svd.se/a/4BpQ96/for...
Forskaren: Inget problem med färre barn
Det låga barnafödandet i Sverige gäckar regeringen, som nu har tillsatt en utredning. Men utredningens problemformulering ifrågasätts av demografiforskaren Martin Kolk. ”Personligen tycker jag inte at...
svd.se
In a new preprint by Linus Andersson, myself and Jan Saarela, we tracks every marriage in Finland 1972 2020 to show how religious conversions shape endogamy — and how those patterns differ for men and women. doi.org/10.17045/sth...
I'm happy to share that the 2nd paper of my PhD "Assessing the validity of microsimulated kinship networks using Swedish population registers", with @demography.bsky.social, @martinkolk.bsky.social and @ezagheni.bsky.social, is available as an MPIDR Working Paper share.google/g0nVmiSI6huB...
MPIDR - Publications
The Max Planck Institute for Demographic Research (MPIDR) in Rostock is one of the leading demographic research centers in the world. At the MPIDR, researchers from all over the world investigate demo...
share.google
Parenthood among same-sex couples has changed as policy & social contexts have evolved. Swedish data revealed that same-sex parenting increased over time among women, but remained rare among men. 👉 New paper by Mollborn, @martinkolk.bsky.social & Evertsson 🔗 genus.springeropen.com/articles/10....
Recent trends in parenthood in Swedish same- and different-sex legal unions: emerging gender and socioeconomic differences - Genus
Parentalization, or becoming a parent and being legally and socially recognized as such, has long been constrained for sexual minorities. Although many studies have examined the outcomes of children o...
genus.springeropen.com
🚨Check out the latest @vypr.bsky.social Data&Trends. Jonas Wood and colleagues investigate urban-rural differences in northern and western Europe regarding women’s educational gradients in fertility. 🔗 austriaca.at?arp=0x004055... #demography @demographyvienna.bsky.social
I think these types of criticisms of quantitative models in the social sciences are largely on point. My solution would be to rely more on simple descriptive and large high powered studies to build robust findings, before moving towards more complicated (and much more fragile) designs.
Ryan Briggs@ryancbriggs.net · last yr.I think the current state of social science research is pretty bad and I wrote something for @asteriskmag.bsky.social about it. asteriskmag.com/issues/10/ca...
With a little delay we learned that @lpcalderonb.bsky.social, who could not attend #PAA2025, won a Best Poster Award! Her colleagues put up the poster and a note from Liliana and co-author @martinkolk.bsky.social jumped in to present the research. Congrats Liliana! @popassocamerica.bsky.social
Here is some great new scientific communication on our new overview perspective paper on the interplay between socioeconomic status and genetics. Research has seldom looked better!
Abdel Abdellaoui@dr-appie.bsky.social · 2y agoDid you get a chance to read the thread on our new @naturehumbehav.bsky.social paper on SES yet? If not, don't worry, I have something better for you! Check out this comic by the amazing @lizahaart.bsky.social Complete comic: communities.springernature.com/posts/are-we... Or in this thread 👇🏾
If anyone wants to learn more about households and kinship in Sweden, they can join this seminar at 13:00 CET where I present a new study on how an indivudal's household members change over the life course. www.su.se/department-o...
In every civilization, people end up sorted into levels of socio-economic status (SES). We explore the history, present, and future of scientific research on the complicated relationship between SES and DNA in @naturehumbehav.bsky.social💰🧬🎓 Link: rdcu.be/efacK Thread below 👇🏽
New study by Klein, Saarela, and Kolk. The religious live longer! Full table approach to mortality by religion.
Demographic Research@demresjournal.bsky.social · 2y agoWhich religion you follow matters for life expectancy. Even in a secular country such as Finland, there are differences of up to six years between different denominations. www.demographic-research.org/articles/vol... @martinkolk.bsky.social
