Ester Lazzari
Demographer

About Me

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I am a researcher and lecturer at the University of Vienna, affiliated with the Wittgenstein Centre for Demography and Global Human Capital. My research explores how biological factors such as stress, health, and fecundity interact with social relationships, environments, and institutions to shape family formation and reproductive behaviour. By bringing together different kinds of data and combining individual- and societal-level perspectives, I aim to better understand why birth rates are changing and how policies can support people in achieving their reproductive goals.

View my CV for a full overview of my academic background and publications.

Publications

Showing 10 of 23 publications

Demographic Research·January 2026

He said, she said: How third-party presence shapes infertility reporting in couples

E Lazzari, N Milewski, & J Passet-Wittig

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Population and Development Review·January 2026

Infertility and unrealized ideal family size

E Lazzari & E Beaujouan

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Journal of Migration and Health·December 2025

Generational changes in self-reported infertility among migrants in Australia

J Passet-Wittig, E Lazzari, & N Milewski

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Population Studies·October 2025

Shifting the reproductive window: The contribution of ART and egg donation to fertility rates in the UK

L Bruckamp & E Lazzari

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Genus·May 2025

Fertility preferences adjusted: reimagining parenthood in response to the uncertainty of infertility

E Lazzari

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Demography·April 2025

Self-assessed health and fertility expectations of men and women across the life course

E Lazzari & E Beaujouan

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European Journal of Population·November 2024

The effect of parental caregiving on the fertility expectations of adult children

E Lazzari & V Zurla

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Population Studies·March 2024

Change in the perceived reproductive age window and delayed fertility in Europe

E Lazzari, MC Compans, & E Beaujouan

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Population Research and Policy Review·January 2024

Impacts of COVID-19 on Medically Assisted Live Birth Rates in the United States in 2020 and 2021

K Tierney & E Lazzari

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Fertility and Sterility Reports·September 2023

Parental sociodemographics of medically assisted reproduction births in the United States: a dyadic population-level study

E Lazzari & K Tierney

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Current Projects

Ongoing

The influence of chronic stress-related biomarkers on the fertility trajectories of men and women (BIOFAM)

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Ongoing

Biological, Individual and Contextual Factors of Fertility Recovery (BIC.Late)

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Teaching

Instructor

Scientific working

University of Vienna

This course introduces students to the foundations of scientific work in the social sciences, guiding them from formulating a research question to writing and presenting a structured research paper. The focus is on developing core academic skills, including critical reading of scientific literature, scientific writing, and effective communication of research through writing, presentation, and data visualisation.

Scientific writingResearch designLiterature reviewCritical readingAcademic writingData visualisationPresentation skillsScientific communication
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Instructor

Statistics for Social Scientists

University of Vienna

In this seminar, I guide students through the foundations of applied empirical research in the social sciences, from understanding data sources to applying key microeconometric methods. The focus is on developing both technical competence and the ability to critically assess research design and evidence.

Applied microeconometricsCausal inferencePanel dataSurvey methodsQuantitative researchResearch designLongitudinal data
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Conferences

British Society for Population Studies
2022Winchester2023Keele
European Population Conference
2022Groningen
International Population Conference
2025Brisbane
PopDays
2025Cagliari
Population Association of America Annual Meeting
2022Atlanta2023New Orleans2025Washington