Friedolin Merhout

ORCID: 0000-0003-3703-7651
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About
Contact & Profiles
Research Areas
  • Social Media and Politics
  • Opinion Dynamics and Social Influence
  • Electoral Systems and Political Participation
  • Misinformation and Its Impacts
  • Advanced Causal Inference Techniques
  • Social and Intergroup Psychology
  • Media Influence and Politics
  • Explainable Artificial Intelligence (XAI)
  • Experimental Behavioral Economics Studies
  • demographic modeling and climate adaptation
  • Migration and Labor Dynamics
  • Obesity, Physical Activity, Diet
  • Scientific Computing and Data Management
  • Forecasting Techniques and Applications
  • Nutritional Studies and Diet
  • Decision-Making and Behavioral Economics
  • Evolutionary Game Theory and Cooperation
  • Social Policy and Reform Studies
  • Food Security and Health in Diverse Populations
  • Meta-analysis and systematic reviews
  • Species Distribution and Climate Change
  • Terrorism, Counterterrorism, and Political Violence
  • Data Analysis with R
  • Religion and Society Interactions

University of Copenhagen
2019-2025

University of Leeds
2021

Ludwig-Maximilians-Universität München
2021

University of Bremen
2021

Danish National Centre for Social Research
2020

Duke University
2018-2019

Significance Social media sites are often blamed for exacerbating political polarization by creating “echo chambers” that prevent people from being exposed to information contradicts their preexisting beliefs. We conducted a field experiment offered large group of Democrats and Republicans financial compensation follow bots retweeted messages elected officials opinion leaders with opposing views. Republican participants expressed substantially more conservative views after following liberal...

10.1073/pnas.1804840115 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2018-08-28

There is widespread concern that Russia and other countries have launched social-media campaigns designed to increase political divisions in the United States. Though a growing number of studies analyze strategy such campaigns, it not yet known how these efforts shaped attitudes behaviors Americans. We study this question using longitudinal data describe online 1,239 Republican Democratic Twitter users from late 2017 merged with nonpublic about Russian Internet Research Agency (IRA) Twitter....

10.1073/pnas.1906420116 article EN cc-by-nc-nd Proceedings of the National Academy of Sciences 2019-11-25
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 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

10.1016/j.jneb.2019.06.021 article EN Journal of Nutrition Education and Behavior 2019-07-23

A longstanding theory indicates that the threat of a common enemy can mitigate conflict between members rival groups. We tested this hypothesis in pre-registered experiment where 1670 Republicans and Democrats United States were asked to complete an online social learning task with bot was labeled as member opposing party. Prior task, we exposed respondents primes about (a) (involving Iran Russia); (b) patriotic event; or (c) neutral, apolitical prime. Though observed no significant...

10.1038/s41598-022-23673-0 article EN cc-by Scientific Reports 2022-11-11

Internet search data reveal an association between anti-Muslim and pro-ISIS searches in U.S. counties.

10.1126/sciadv.aao5948 article EN cc-by-nc Science Advances 2018-06-01

There is mounting concern that social media sites contribute to political polarization by creating "echo chambers" insulate people from opposing views about current events. We surveyed a large sample of Democrats and Republicans who visit Twitter at least three times each week range policy issues. One later, we randomly assigned respondents treatment condition in which they were offered financial incentives follow bot for one month exposed them messages produced elected officials,...

10.31235/osf.io/4ygux article EN 2018-03-21

There is widespread concern that social media driving political polarization. However, there also increasing evidence conversation between people with opposing views— which can enable—may decrease animus them. Do anonymous online conversations of different parties exacerbate or mitigate partisan polarization? We created a mobile chat platform to study the impact such discussions. Our recruited Republicans and Democrats in United States complete survey about their views. later randomized them...

10.31235/osf.io/cwgu5 preprint EN 2022-09-23

Longstanding theory indicates the threat of a common enemy can mitigate conflict between members rival groups. We tested this hypothesis in pre-registered experiment where 1,670 Republicans and Democrats United States were asked to complete collaborative online task with an automated agent or “bot” that was labelled as member opposing party. Prior task, we exposed respondents primes about a) (involving threats from Iran, China, Russia); b) patriotic event; c) neutral, apolitical prime....

10.31235/osf.io/x2dby preprint EN 2020-11-19
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
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 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 McWagner 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_v1 preprint EN 2021-03-24
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