Jannes Jacobsen

ORCID: 0000-0003-4358-0458
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About
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Research Areas
  • Migration and Labor Dynamics
  • Migration, Health and Trauma
  • Migration, Refugees, and Integration
  • Education and experiences of immigrants and refugees
  • Survey Methodology and Nonresponse
  • Sociology and Education Studies
  • Public Administration and Political Analysis
  • Social and Intergroup Psychology
  • Populism, Right-Wing Movements
  • Data Analysis with R
  • European Politics and Security
  • Explainable Artificial Intelligence (XAI)
  • Environmental and Biological Research in Conflict Zones
  • Social Policy and Reform Studies
  • Racial and Ethnic Identity Research
  • Employment and Welfare Studies
  • Advanced Causal Inference Techniques
  • Terrorism, Counterterrorism, and Political Violence
  • Computational and Text Analysis Methods
  • German legal, social, and political studies
  • Scientific Computing and Data Management
  • Global Energy Security and Policy
  • German Economic Analysis & Policies
  • Health and Medical Studies
  • Economic and Social Issues

The Expert Council of German Foundations on Integration and Migration
2022-2025

German Center for Integration and Migration Research
2022-2024

WZB Berlin Social Science Center
2022-2023

Zeppelin Universität gemeinnützige GmbH
2022

Freie Universität Berlin
2022

German Institute for Economic Research
2019-2021

Ludwig-Maximilians-Universität München
2021

University of Bremen
2021

University of Leeds
2021

Humboldt-Universität zu Berlin
2019

Nate Breznau Eike Mark Rinke Alexander Wuttke Hung Hoang Viet Nguyen Muna Adem and 95 more Jule Adriaans Amalia Álvarez-Benjumea Henrik Kenneth Andersen Daniel Auer Flávio Azevedo Oke Bahnsen Dave Balzer Gerrit Bauer Paul Cornelius Bauer Markus Baumann Sharon Baute Verena Benoit Julian Bernauer Carl Berning Anna Berthold Felix S. Bethke Thomas Biegert Katharina Blinzler Johannes N. Blumenberg Licia Bobzien Andrea Bohman Thijs Bol Amie Bostic Zuzanna Brzozowska Katharina Burgdorf Klaus Burger Kathrin Busch Juan Carlos Castillo Nathan Chan Pablo Christmann Roxanne Connelly Christian S. Czymara Elena Damian Alejandro Ecker S. Kellogg Maureen A. Eger Simon Ellerbrock Anna Forke Andrea Förster Chris Gaasendam Konstantin Gavras Vernon Gayle Theresa Gessler Timo Gnambs Amélie Godefroidt Max Grömping Martin Groß Stefan Gruber Tobias Gummer Andreas Hadjar Jan Paul Heisig Sebastian Hellmeier Stefanie Heyne Magdalena Hirsch Mikael Hjerm Oshrat Hochman Andreas Hövermann Sophia Hunger Christian Hunkler Nora Huth-Stöckle Zsófia S. Ignácz Laura Jacobs Jannes Jacobsen Bastian Jaeger Sebastian Jungkunz Nils Jungmann Mathias Kauff Manuel Kleinert Julia Klinger Jan-Philipp Kolb Marta Kołczyńska John Kuk Katharina Kunißen Dafina Kurti Sinatra Alexander Langenkamp Philipp M. Lersch Lea-Maria Löbel Philipp Lutscher Matthias Mader Joan E. Madia Natalia Malancu Luis Maldonado Helge Marahrens Nicole Martin Paul Martinez Jochen Mayerl Oscar J. Mayorga Patricia McManus Kyle McWagner Cecil Meeusen Daniel Meierrieks Jonathan Mellon Friedolin Merhout Samuel Merk Daniel Meyer

This study explores how researchers’ analytical choices affect the reliability of scientific findings. Most discussions problems in science focus on systematic biases. We broaden lens to emphasize idiosyncrasy conscious and unconscious decisions that researchers make during data analysis. coordinated 161 73 research teams observed their as they used same independently test prominent social hypothesis: greater immigration reduces support for policies among public. In this typical case...

10.1073/pnas.2203150119 article EN cc-by Proceedings of the National Academy of Sciences 2022-10-28
Nate Breznau Eike Mark Rinke Alexander Wuttke Muna Adem Jule Adriaans and 95 more Esra Akdeniz Amalia Álvarez-Benjumea Henrik Kenneth Andersen Daniel Auer Flávio Azevedo Oke Bahnsen Ling Bai Dave Balzer Paul Cornelius Bauer Gerrit Bauer Markus Baumann Sharon Baute Verena Benoit Julian Bernauer Carl Berning Anna Berthold Felix S. Bethke Thomas Biegert Katharina Blinzler Johannes N. Blumenberg Licia Bobzien Andrea Bohman Thijs Bol Amie Bostic Zuzanna Brzozowska Katharina Burgdorf Klaus Burger Kathrin Busch Juan Carlos Castillo Nathan Chan Pablo Christmann Roxanne Connelly Christian S. Czymara Elena Damian Eline A. de Rooij Alejandro Ecker S. Kellogg Christina Eder Maureen A. Eger Simon Ellerbrock Anna Forke Andrea Förster Danilo Freire Christiaan Reinier Gaasendam Konstantin Gavras Vernon Gayle Theresa Gessler Timo Gnambs Amélie Godefroidt Max Grömping Matthias Gross Stefan Gruber Tobias Gummer Andreas Hadjar Verena Halbherr Jan Paul Heisig Sebastian Hellmeier Stefanie Heyne Magdalena Hirsch Mikael Hjerm Oshrat Hochman Jan H. Höffler Andreas Hövermann Sophia Hunger Christian Hunkler Nora Huth-Stöckle Zsófia S. Ignácz Sabine Israel Laura Jacobs Jannes Jacobsen Bastian Jaeger Sebastian Jungkunz Nils Jungmann Jennifer Kanjana Mathias Kauff Salman Khan Sayak Khatua Manuel Kleinert Julia Klinger Jan-Philipp Kolb Marta Kołczyńska John Kuk Katharina Kunißen Dafina Kurti Sinatra Alexander Langenkamp Robin C. Lee Philipp M. Lersch David Liu Lea-Maria Löbel Philipp Lutscher Matthias Mader Joan E. Madia Natalia Malancu Luis Maldonado Helge Marahrens

This study investigates researcher variability in computational reproduction, an activity for which it is least expected. Eighty-five independent teams attempted numerical replication of results from original policy preferences and immigration. Reproduction were randomly grouped into a ‘transparent group’ receiving code or ‘opaque only method description no code. The transparent group mostly verified (95.7% same sign p -value cutoff), while the opaque had less success (89.3%). Second-decimal...

10.1098/rsos.241038 article EN cc-by Royal Society Open Science 2025-03-01

Involuntarily or planned – many refugees flee their home country alone, leave behind spouses and children but also siblings, parents other family members they otherwise care for. Reunification in hosting communities is difficult, as governments limit institutional reunifications the individual journey of kin dangerous often illegal. Having abroad mentally distressing for refugees, might not live safety. Additionally, reuniting with can be a source support new environment. Grounded theories...

10.1080/1369183x.2021.1884538 article EN cc-by Journal of Ethnic and Migration Studies 2021-02-16

Over the course of 2013 to 2016, over one million asylum seekers arrived in Germany, around 890,000 them 2015 alone. The growing refugee population posed a major challenge for Germany’s policy makers, civic administrators, and society at large, finding new approaches registration procedures, housing, social economic integration. To design policies programs that meet these needs, government politicians, public require robust analyses accompanying demographic changes based on timely, valid,...

10.13094/smif-2019-00005 article EN 2019-04-02
Nate Breznau Eike Mark Rinke Alexander Wuttke Muna Adem Jule Adriaans and 95 more Amalia Álvarez-Benjumea Henrik Kenneth Andersen Daniel Auer Flávio Azevedo Oke Bahnsen Dave Balzer Gerrit Bauer Paul Cornelius Bauer Markus Baumann Sharon Baute Verena Benoit Julian Bernauer Carl Berning Anna Berthold Felix S. Bethke Thomas Biegert Katharina Blinzler Johannes N. Blumenberg Licia Bobzien Andrea Bohman Thijs Bol Amie Bostic Zuzanna Brzozowska Katharina Burgdorf Klaus Burger Kathrin Busch Juan Carlos Castillo Nathan Chan Pablo Christmann Roxanne Connelly Christian S. Czymara Elena Damian Alejandro Ecker S. Kellogg Maureen A. Eger Simon Ellerbrock Anna Forke Andrea Förster Chris Gaasendam Konstantin Gavras Vernon Gayle Theresa Gessler Timo Gnambs Amélie Godefroidt Max Grömping Martin Groß Stefan Gruber Tobias Gummer Andreas Hadjar Jan Paul Heisig Sebastian Hellmeier Stefanie Heyne Magdalena Hirsch Mikael Hjerm Oshrat Hochman Andreas Hövermann Sophia Hunger Christian Hunkler Nora Huth-Stöckle Zsófia S. Ignácz Laura Jacobs Jannes Jacobsen Bastian Jaeger Sebastian Jungkunz Nils Jungmann Mathias Kauff Manuel Kleinert Julia Klinger Jan-Philipp Kolb Marta Kołczyńska John Kuk Katharina Kunißen Dafina Kurti Sinatra Alexander Greinert Philipp M. Lersch Lea-Maria Löbel Philipp Lutscher Matthias Mader Joan E. Madia Natalia Malancu Luis Maldonado Helge Marahrens Nicole Martin Paul Martinez Jochen Mayerl Oscar J. Mayorga Patricia McManus Kyle Wagner Cecil Meeusen Daniel Meierrieks Jonathan Mellon Friedolin Merhout Samuel Merk Daniel Meyer Leticia Micheli

This study explores how researchers’ analytical choices affect the reliability of scientific findings. Most discussions problems in science focus on systematic biases. We broaden lens to include conscious and unconscious decisions that researchers make during data analysis may lead diverging results. coordinated 161 73 research teams observed their as they used same independently test prominent social hypothesis: greater immigration reduces support for policies among public. In this typical...

10.31222/osf.io/cd5j9 preprint EN 2021-03-24

Abstract This study introduces and investigates the validity of a brief scale measuring challenged sense belonging. The belonging as well challenges to this are important, albeit neglected aspects social integration significance migration refugee studies virtually all other science contexts. Assessing or eroded provides important insights into how individuals relate their environment whether they feel socially connected disconnected from it. construct goes beyond national cultural identity,...

10.1186/s42409-021-00021-y article EN cc-by Measurement Instruments for the Social Sciences 2021-02-03

Background The integration of artificial intelligence (AI) holds substantial potential to alter diagnostics and treatment in health care settings. However, public attitudes toward AI, including trust risk perception, are key its ethical effective adoption. Despite growing interest, empirical research on the factors shaping support for AI (particularly large-scale, representative contexts) remains limited. Objective This study aimed investigate patient care, focusing how attributes (autonomy,...

10.2196/70179 article EN cc-by Journal of Medical Internet Research 2025-05-27

Objectives To examine potential deteriorations in mental health and well-being the first COVID-19 pandemic year compared with previous decade focusing on following vulnerable subgroups Germany: women minor children household, those living without a partner, younger older adults, precarious labour market situation, immigrants refugees, pre-existing physical or risks. Design Analyses of secondary longitudinal survey data using cluster-robust pooled ordinary least squares models. Participants...

10.1136/bmjopen-2022-071331 article EN cc-by-nc BMJ Open 2023-06-01

About 80 million people were displaced worldwide at the end of 2020. To support this highly vulnerable group, in recent years, local bottom-up initiatives proliferated to refugee integration hosting communities. This study examines a network intervention for refugees collaboration with social start-up whose mission is match and volunteers form friendships. We apply an innovative randomised controlled trial approach 446 participants integrated into survey almost 8000 randomly sampled who...

10.1080/1369183x.2022.2058918 article EN cc-by Journal of Ethnic and Migration Studies 2022-04-13

Abstract This study addresses the heated academic and public debate on compatibility comparability of refugees’ host societies’ democratic values. Comparative values research has long capitalized global similarities differences in support for Western We argue that such cross-cultural comparisons culturally diverse groups are challenged by (1) different conceptions democracy determined experiences with systems (2) bias introduced linguistic translation processes. In order to analyze whether...

10.1007/s11205-020-02397-6 article EN cc-by Social Indicators Research 2020-06-05

Geflüchtete aus der Ukraine wurden direkt nach Beginn des russischen Angriffskrieges Ende Februar 2022 in vielen europäischen Ländern mit überwältigender Solidarität empfangen, auch Deutschland. Hat sich die Haltung Menschen seitdem verändert? In diesem DeZIM.insights Working Paper analysieren wir Unterstützungsbereitschaft im ersten Jahr Kriegsbeginn.Hierzu greifen auf Daten DeZIM.panels zurück und untersuchen, wie den Bereichen freiwilliges Engagement, Spendenbereitschaft sowie...

10.31235/osf.io/9vkrf preprint DE 2023-02-14

Abstract With the so-called ‘long summer of migration’ 2015, there was an urgent need to accommodate many refugees in Germany. This situation framed as a ‘refugee reception crisis’, and it revealed diametrically opposed stances within German society. Within this debate, anti-refugee sentiment is often explained with placement nearby refugee facilities. Conclusive evidence claim yet missing. Most studies dealing immigration attitudes toward lack appropriate geo-data test assumption. We fill...

10.1093/esr/jcad028 article EN cc-by European Sociological Review 2023-06-01

Was wird erklärt? Sozialwissenschaftliche Untersuchungen basieren häufig auf Umfragen. Gelten diese als repräsentativ, so ist dies ein Gütesiegel für die Möglichkeit, Aussagen über eine Grundgesamtheit zu treffen. genau bedeutet aber "repräsentativ" – und welche Umfragen können bezeichnet werden?

10.1055/a-0859-8631 article DE PPmP - Psychotherapie · Psychosomatik · Medizinische Psychologie 2019-05-01

Abstract Prior research has suggested three explanations why levels of voluntary engagement rise and fall over time within societies. A social structural explanation considers individual resources crucial for argues that a redistribution those may bring about changes in engagement. cohort-based socialisation experiences formative years as the uptake Finally, period-based extraordinary events, external shocks, crises to be So far, these have mainly been tested separately little is known...

10.1007/s11266-022-00518-y article EN cc-by VOLUNTAS International Journal of Voluntary and Nonprofit Organizations 2022-08-01

Abstract Adding to the rich literature on economic integration of refugees, this article extends scope towards role institutions by focusing transfer human capital means credential recognition. The 2012 Federal Act Recognition in Germany is a new institution that provides possibility study depth. I argue analysing decision for recognition credentials an important aspect because it mirrors investment future labour-market access. hypothesize institutions, such as and language classes refugee...

10.1093/jrs/fez094 article EN Journal of Refugee Studies 2019-10-08

Panel attrition poses major threats to the survey quality of panel studies. Many features have been introduced keep as low possible. Based on a random sample refugees, highly mobile population, we investigate whether using phone application improves address and response behavior. Various features, including geo-tracking, collecting email addresses adress changes, are tested. Additionally, respondent interviewer effects consent download app sharing GPS geo-positions. Our findings show that...

10.1177/0894439320985250 article EN Social Science Computer Review 2021-01-28

Geflüchtete aus der Ukraine wurden direkt nach Eskalation des Kriegs in vielen Ländern Europa mit überwältigender Solidarität empfangen. Dieses DeZIM.insight analysiert die Entwicklung Unterstützungsbereitschaft den ersten Monaten danach. Hierzu greifen wir auf Daten DeZIM.panels zurück und untersuchen, wie hoch im Bereich freiwilligen Engagements, Spendenbereitschaft sowie Bereitschaft bei Aufnahme von Geflüchteten eigenen Zuhause Juli 2022 ist sich diese zwischen März verändert hat. Unsere...

10.31235/osf.io/8h5c6 preprint DE 2022-09-06

The exploding energy prices because of the Russian war aggression in Ukraine are at top political agenda Europe. Due to high levels inflation and associated social economic hardships for population, it has been expected that crisis would spark contention result mass protest. Based on a representative population survey Germany, we investigate current level protest potential how this is related socio-demographic characteristics factors. Our analyses show around every fourth respondent can...

10.31235/osf.io/cskdf preprint EN 2023-01-31
Nate Breznau Eike Mark Rinke Alexander Wuttke Hung Hoang Viet Nguyen Muna Adem and 95 more Jule Adriaans Esra Akdenız Amalia Álvarez-Benjumea Henrik Kenneth Andersen Daniel Auer Flávio Azevedo Oke Bahnsen Ling Bai Dave Balzer Gerrit Bauer Paul Cornelius Bauer Markus Baumann Sharon Baute Verena Benoit Julian Bernauer Carl Berning Anna Berthold Felix S. Bethke Thomas Biegert Katharina Blinzler Johannes N. Blumenberg Licia Bobzien Andrea Bohman Thijs Bol Amie Bostic Zuzanna Brzozowska Katharina Burgdorf Kaspar Burger Kathrin Busch Juan Carlos Castillo Nathan W. Chan Pablo Christmann Roxanne Connelly Christian S. Czymara Elena Damian Eline A. de Rooij Alejandro Ecker S. Kellogg Christina Eder Maureen A. Eger Simon Ellerbrock Anna Forke Andrea Förster Danilo Freire Chris Gaasendam Konstantin Gavras Vernon Gayle Theresa Gessler Timo Gnambs Amélie Godefroidt Max Grömping Martin Groß Stefan Gruber Tobias Gummer Andreas Hadjar Verena Halbherr Jan Paul Heisig Sebastian Hellmeier Stefanie Heyne Magdalena Hirsch Mikael Hjerm Oshrat Hochman Jan H. Höffler Andreas Hövermann Sophia Hunger Christian Hunkler Nora Huth-Stöckle Zsófia S. Ignácz Sabine Israel Laura Jacobs Jannes Jacobsen Bastian Jaeger Sebastian Jungkunz Nils Jungmann Jennifer Kanjana Mathias Kauff Salman Khan Sayak Khatua Manuel Kleinert Julia Klinger Jan-Philipp Kolb Marta Kołczyńska John Kuk Katharina Kunißen Dafina Kurti Sinatra Alexander Greinert Robin C. Lee Philipp M. Lersch David Liu Lea-Maria Löbel Philipp Lutscher Matthias Mader Joan E. Madia Natalia Malancu Luis Maldonado

This paper reports findings from a crowdsourced replication. Eighty-five independent teams attempted computational replication of results reported in an original study policy preferences and immigration by fitting the same statistical models to data. The involved experimental condition. Random assignment put participating into either transparent group that received code, or opaque receiving only methods section, rough description no code. mostly verified numerical with sign p-value threshold...

10.31235/osf.io/j7qta preprint EN 2021-05-18
Nate Breznau Eike Mark Rinke Alexander Wuttke Muna Adem Jule Adriaans and 95 more Amalia Álvarez-Benjumea Henrik Kenneth Andersen Daniel Auer Flávio Azevedo Oke Bahnsen Dave Balzer Gerrit Bauer Paul F. Bauer Markus Baumann Sharon Baute Verena Benoit Carl Berning Julian Bernauer Anna Berthold Felix S. Bethke Thomas Biegert Katharina Blinzler Johannes N. Blumenberg Thijs Bol Licia Bobzien Andrea Bohman Amie Bostic Zuzanna Brzozowska Katharina Burgdorf Kaspar Burger Kathrin Busch Juan Carlos Castillo Nathan W. Chan Pablo Christmann Roxanne Connelly Christian S. Czymara Elena Damian S. Kellogg Alejandro Ecker Maureen A. Eger Simon Ellerbrock Anna Forke Andrea Förster Konstantin Gavras Vernon Gayle Chris Gaasendam Theresa Gessler Timo Gnambs Amélie Godefroidt Alexander Greinert Martin Groß Max Grömping Stefan Gruber Tobias Gummer Andreas Hadjar Jan Paul Heisig Sebastian Hellmeier Stefanie Heyne Magdalena Hirsch Mikael Hjerm Oshrat Hochman Jan H. Höffler Andreas Hövermann Nora Huth-Stöckle Sophia Hunger Christian Hunkler Zsófia S. Ignácz Laura Jacobs Jannes Jacobsen Bastian Jaeger Sebastian Jungkunz Nils Jungmann Mathias Kauff Manuel Kleinert Julia Klinger Jan-Philipp Kolb Marta Kołczyńska John Kuk Katharina Kunißen Dafina Kurti Philipp M. Lersch Lea-Maria Löbel Philipp Lutscher Matthias Mader Joan E. Madia Natalia Malancu Luis E. Maldonado Helge Marahrens Nicole Martin Paul Martínez Jochen Mayerl Oscar J. Mayorga Patricia McManus Cecil Meeusen Daniel Meierrieks Jonathan Mellon Friedolin Merhout Samuel Merk Daniel Meyer Leticia Micheli

In an era of mass migration, social scientists, populist parties and movements raise concerns over the future immigration-destination societies. What impacts does this have on policy solidarity? Comparative cross-national research, relying mostly secondary data, has findings in different directions. There is a threat selective model reporting lack replicability. The heterogeneity countries obscures attempts to clearly define data-generating models. P-hacking HARKing lurk among standard...

10.31235/osf.io/6j9qb preprint EN 2019-01-26

Abstract This article highlights the potentials for migration research using German Socio-Economic Panel Study (SOEP), a longitudinal panel dataset of private households in Germany running since 1984. We provide concise overview its basic features, describe survey contents and potentials, demonstrate opportunities to link external data sources SOEP thereby presenting diverse impactful applications research.

10.1515/jbnst-2021-0001 article EN cc-by Jahrbücher für Nationalökonomie und Statistik 2021-02-11
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