Max Planck Institute for Demographic Research (MPIDR)

Many thanks to everyone who took part in the 7th IMPRS-PHDS Academy at @mpidr.bsky.social, either in person or online, and helped to make it such a success. Big congratulations to Andrea Colasurdo, Chiara Micheletti and @lauraleone.bsky.social on winning the Best Poster Award!

We’ve got a strong contingent of PhD students and staff at the three-day @imprs-phds.bsky.social Annual Academy being held from 3-5 December @mpidr.bsky.social in Rostock, Germany! 💙 @maryabedalahad.bsky.social @ischiathere.bsky.social

Young man with blond hair wearing a white shirt collar under a dark blue sweater in front of a dark background.

WelcomeWeeks@MPIDR 👏👏👏We welcome Jan Einhoff as new research scientist. His main research interests are in social demography, life course research, and quantitative methods. His dissertation examined the social stratification of late working lives in Europe.
https://www.demogr.mpg.de/go/welcomeJein

Stellenanzeige für Sachbearbeiter*in in der Buchhaltung beim Max-Planck-Institut für demografische Forschung.

‼️Jobangebot‼️
Zur Verstärkung unserer Institutsverwaltung suchen wir unbefristet eine*n Sachbearbeiter*in Buchhaltung (m/w/d)
Bewerbungsschluss: 5. Januar 2026
https://www.demogr.mpg.de/de/karriere_6122/jobs_fellowships_1910/sachbearbeiter_in_buchhaltung_m_w_d_14866

As always, it is a pleasure to have everybody here!

WelcomeWeeks@MPIDR
We welcome Elena Pojman 👏👏👏. Before MPIDR, Elena was a dual-title Ph.D. candidate in sociology and demography at Penn State University. Her research focuses on social stratification & how it affects how people spend their time & money.
https://www.demogr.mpg.de/go/welcomeEP

Congratulations Jan and welcome!

Come visit MPIDR in ☀️Summer 2026☀️
📣Call for Application for the "Population and Social Data Science Summer Incubator Program"
📅☀️June 8th – August 21st, 2026☀️
🗺️MPIDR in Rostock, Germany
Application Deadline: Jan 14, 2026
Apply here and learn more:
incubator.demogr.mpg.de

🚅🛫🧳MPIDR on Tour"
What a successful visit to Vienna looks like: In Nov, we joined the Wittgenstein Centre Conference 2025 on "Demographic Perspectives on Migration in the 21st Century". Poster awards for @athinaanas.bsky.social & Julie Kim (former MPIDR summer incubator student & MPIDR guest)

The call for applications for the Summer Incubator 2026 at the @mpidr.bsky.social is open!

Deadline: Jan 14, 2026.

Topics/Teams:
1) Spatial Mobility and Scientific Production
2) Digitalization, AI and Inequalities

Check out the brand new website for information:
www.incubator.demogr.mpg.de

🎓🎓🎓Congratulations, @philippdierker.bsky.social🎉🎉🎉

He successfully defended his doctoral thesis “Partnership Dynamics and Changes in Health and Well-Being: A Bidirectional Relationship”. His findings are relevant to family sociology, public health, social policy.
www.demogr.mpg.de/en/news_even...

Gaza: Study Reveals Unprecedented Losses of Life & Life Expectancy
Researchers from MPIDR & the Centre for Demographic Studies (CED) investigated the impact of the conflict in Gaza on mortality. Life expectancy 2024 fell to nearly half the level expected without the war. www.demogr.mpg.de/go/GazaLE

MPIDRonTour! 🛄🛫 🚅 🚢This week Stefano Arnolfo presented his work on “The Cost of #Family Complexity: How Multipartnered #Fertility Shapes Earnings Trajectories in the Netherlands” at the Meeting of the @eaps.bsky.social Working Group on Register-Based Fertility Research at the University of Antwerp.

Oops! The social media team accidentally promoted Susie as the head of a second research group on slide two of this post, "Productive Ageing." We apologize for the typo. Of course, it should be "Reproductive Ageing."

However, we are open to ideas about what productive ageing looks like.

📢Job Offer‼️New Max Planck Research Group on Reproductive Ageing
Interview with D. Susie Lee 이수지 Leader of the Group:
https://www.demogr.mpg.de/go/RGRA
Job:
https://www.demogr.mpg.de/en/career_6122/jobs_fellowships_1910/postdoc_research_scientist_in_the_reproductive_ageing_research_group_14844/

Woman with long, curly hair wearing a brown blazer in front of a dark background.

New Faces @MPIDR! Welcome, Aysha Basheer! 👋👋👋
Autumn is the time when many bright young scientists join MPIDR & become part of our team. This year's Welcome Weeks start with Aysha Basheer!
https://www.demogr.mpg.de/en/news_events_6123/news_press_releases_4630/news/welcome_aysha_basheer_14850

Welcome to the 2025-2026 class of EDSD students!
After 8 weeks of preparatory courses at the @mpidr.bsky.social, they arrived at INED where they'll be hosted for the next 9 months to the completion of the program, and they've each given a flash-talk on their activities and research subjects.

Climate Change, Environmental Hazards, & Population Dynamics: 1st Climate Conference @mpidr.bsky.social discusses connections between environmental #Hazards #Sustainability & the impact on #SocialInequalities #Mortality #Migration #Fertility #HumanCapital #Health:
www.demogr.mpg.de/en/news_even...

Thank you @mpidr.bsky.social for inviting me to the workshop, "Climate Change, Environmental Hazards and Population Dynamics." I am learning so much from the new research led by environmental demographers in Europe.

Fertility, birth, reproduction: Connecting formal demographic frameworks The conventional framework of fertility research conceptualizes childbirth from the mother’s perspective. From her perspective, birth is an uncertain and potentially recurring event. In contrast, t...

... for example by studying age patterns of fertility in different #population groups. Potentially, the functions could also be helpful to improve fertility forecasts,” Antonino Polizzi says. ... 6/6
doi.org/10.1080/0032...

birth histories or parity. All that is needed are age-specific fertility rates from sources such as the Human Fertility Database or the UN World Population Prospects.“We hope that the functions could be useful to advance conventional fertility research, ... 5/6

This is important because #fertility rates are more frequently used in the study of reproductive timing (“conventional approach”).

The new density, survival, and hazard functions for the conventional approach summarize fertility #age patterns without requiring #data on individual ... 4/6

cohort & age to calculate density, survival, and hazard functions that describe reproductive timing at the population level. In their new article, Baudisch & Polizzi reformulate the B1D1 approach, so that density, survival, & hazard functions can be calculated using fertility rates as input. ... 3/6

life course. The authors build on the “Born once, die once” approach (#B1D1), which views birth as an event experienced by the child, not the parent. From the child’s perspective, birth is a certain event that occurs only once, like death. The B1D1 perspective uses birth counts by parental ...2/6

Density, survival, and hazard functions in the Born once, die once framework and the conventional fertility framework, by maternal cohort (1880–1960), Sweden

👓Recommended Reading📚 Rethinking Formal Demography: Birth as an Event Experienced by the Child
In their current paper, Annette Baudisch @sdu.dk & @polizzan.bsky.social (MPIDR) use methods from mortality research to describe when children are born in the parental ...1/6
@oxforddemsci.bsky.social

🚨Job🚨Postdoc Position(s) at the Max Planck–University of Helsinki Centre for Social Inequalities in Population Health, a joint initiative of @mpidr.bsky.social & @helsinki.fi with the vision to unearth pivotal social processes that generate health inequalities.
www.demogr.mpg.de/en/career_61...

Call for Papers!

Submit your paper for the conference: 'Kinship Structures, Dynamics and Inequalities', taking place on 8 and 9 June 2026 @mpidr.bsky.social in Rostock organized by @demography.bsky.social, @iussp.bsky.social +coll.
Deadline: 21 January 2026
www.demogr.mpg.de/go/kinship-conference

Six Million Euros for Research on Population Projections in Finland

MPIDR director Mikko Myrskylä + coll. Wolfgang Lutz, Mirkka Danielsbacka and Anna Rotkirch will receive 6 million euros to do research on population projections for migration scenarios (MigScene). www.demogr.mpg.de/en/news_even...

👏 Our hybrid IDEM Course "Topics in Digital and Computational Demography" is currently happening and we are happy about so many students from all over the world joining us!

Two people wearing aprons prepare food together in a modern kitchen, a symbolic image of partnership and living together.

🆕📰Marriage or Separation
Angela Carollo, H.Putter,P.Eilers​​​​​​ &J.Gampe have developed a model to analyze transitions from non-marital cohabitation to either marriage or separation considering two-time scales simultaneously: age of individuals & duration of cohabitation.
https://ow.ly/WUty50XcZzT