Prof. Dr. Judith Möller

Scientific Director

Judith Möller has taken up the professorship “Empirical Communication Research, especially Media Use and Social Media Effects” at Universität Hamburg in cooperation with the Leibniz Institute for Media Research | Hans-Bredow-Institut (HBI) on 1 February 2023. This is a joint appointment, which combines teaching at the University’s Institute of Journalism and Communication Studies with extensive research activities at the HBI.

Her research focuses on the effects of political communication, especially in social media. The focus is on two questions: (1) the impact of personalised political communication on individuals and society as a whole, and (2) the role of (new) media in the process of opinion formation, especially as part of political socialisation processes.

Judith Möller war Associate Professor of Political Communication at the Department of Communication Studies, University of Amsterdam (UvA) and Associate Professor at the Department of Sociology and Political Science, University of Trondheim before. She is an associate member of the Amsterdam School of Communication Research (ASCoR), the Center for Politics and Communication (CPC) and the Information, Communication, & the Data Society Initiative (ICDS).

In 2019, Judith Möller received a VENI Talent Track grant from the Netherlands Science Foundation (NWO). The project is entitled “Vocal, Visible and Vaulting? (Dis)connected Niche Audiences in the Age of Artificial Intelligence” and investigates the impact of algorithmic filtering systems and artificial intelligence on specific populations and niche audiences. Her work has been published in numerous international journals. She is a member of the editorial board of the Journal of Communication and Political Communication and an ad hoc reviewer for leading journals in the field.

Transfer

The transfer of her research and collaboration with practitioners is of great importance to Judith Möller. She regularly participates in public debates or science festivals and is in constant dialogue with newspaper publishers, public broadcasters and media regulators. For the German media authority Medienanstalten, she contributed to an expert opinion on types of disinformation and misinformation, which looked at different forms of disinformation and their dissemination from a communication science and legal perspective. She is also regularly invited as an expert to meetings of media regulators and consumer and market authorities, such as the European Regulators Group for Audiovisual Media Services (ERGA), the European Platform of Regulatory Authorities (EPRA), Medienanstalt Berlin-Brandenburg (mabb), Landesanstalt für Medien NRW, the Swiss Federal Media Commission (EMEK) or Election Observation and Democracy Support (EODS).

Contact information

Prof. Dr. Judith Möller

Scientific Director

Leibniz Institute for Media Research, Hans-Bredow-Institut
Warburgstraße 30b
20354 Hamburg

Last update: 12.11.2025

Works by Prof. Dr. Judith Möller

Cover of the article written by Anna von Garmissen published on January 10th, 2026 on the media platform of epd Medien: "Gefährliche Abwärtsspirale. Zur Lage des Journalismus in Deutschland"
Publikation Article in epd Medien

Studies on the State of Journalism in Germany

What is the state of journalism in Germany? In her article for epd Medien, Anna von Garmissen discusses three recent studies on the state of journalism in Germany. According to von Garmissen, the findings are thought-provoking and, when considered together, should be alarming to all of us.

Hände tippen auf Laptop-Tastatur, darüber eingeblendete Symbole für Text, Dokument, Lupe und Auszeichnung mit Häkchen.
Beitrag Media Research Blog Post

Platform Badges for Civic Communication

How can platforms address distortions in the digital attention economy without restricting free expression excessively? This blog post explores how new incentive structures can promote constructive communication on digital platforms and the potential of the Digital Services Act to facilitate such interventions.

Cover of the Publication
Publikation Chapter in Anthology

Contextualized Repertoire Maps in Media Usage Research

In their article, Dr. Lisa Merten and Prof. em. Dr. Uwe Hasebrink present contextualized repertoire maps as a method for recording media repertoires based on a study on news usage and discuss their possibilities and limitations in media usage research. Their article is part of the anthology “Researching Media, Data, and Networking Practices: Methodological Concepts and Research Software.”

Publication by Jan-Ole Harfst in the special edition
Publikation Special Edition of the Bonner Rechtsjournal

Communication Risks in Online Environments

How can German democracy remain resilient in the face of the communicative threats posed by the digital space? Jan-Ole Harfst's article shows that communicative threats on the internet cannot be countered at the national level alone, but require supranational protection of democracy, and assesses the significance of the Digital Services Act in this context.

Publikation Internet Policy Review

Can Quality Badges Improve Communication on Online Platforms?

A seal of approval for civil communication could promote successful public communication on online platforms while respecting users'freedoms. In their article 'Platform Badges for Civic Communication. An Interdisciplinary Discussion of a Risk Mitigation Measure Pursuant to Art.', Jan Rau, Jan-Ole Harfst and Dr. Tobias Mast examine various design options for such seals.

Cover of the publication
Publikation Open Access Publication

Global Media and Internet Concentration

The report offers a thorough overview of the development, economic importance, and market concentration of major companies in Germany's telecommunications, media, publishing, and internet sectors from 2019 to 2023. It places a particular focus on the growing dominance of digital platforms.

Cover der Zeitschrift "Medien & Kommunikationswissenschaft" Heft 4/2025
Publikation Available Open Access

Issue 4/2025 M&K published

Issue 4/2025 of our open access journal “Medien & Kommunikationswissenschaft" (M&K; Media & Communication Studies) has been published online via the platform Inlibra.

Cover of the Book Chapter
Publikation Chapter in Cohesion Report

The Climate Discourse on Social Media

The Social Media Observatory (SMO) examined the dynamics of climate discourse on social media for the Research Institute Social Cohesion's (RISC) second cohesion report. The study found that climate scepticism and misinformation are common in social media debates. However, it is evident that these views are significantly less prevalent in wider society.

The cover of the article "Fertility Preservation from the Patient's Perspective: Areas of Conflict and Information Needs in Social Media," published in the journal Die Onkologie
Publikation Article in the Journal Onkologie

Perspectives of Cancer Patients on Fertility Preservation Measures

Fertility preservation is a key challenge for cancer patients. A qualitative content analysis of social media posts offers insights into patient experiences and provides guidance for needs-based fertility counseling.

Cover of the Working Paper
Publikation Working Paper Available for Download

Algorithmic Competence of Young People on TikTok

A new qualitative #UseTheNews study by the Leibniz Institute for Media Research examines what teenagers and young adults know about how TikTok's algorithmic recommendation system works.

Cover of the publication
Publikation Open Access Publication

Information Systems and Troubled Democracy

Internet freedom has declined for 14 consecutive years. This publication examines how principles for regulating information ecosystems are being implemented, as well as the challenges faced by public institutions and other stakeholders in their efforts to combat misinformation and disinformation.

Screenshot of the article by Dr. Gregor Wiedemann, AVISO, issue no. 81 (Fall 2025)
Publikation Article in aviso I Informationsdienst der DGPuK

AI and Research: Harnessing Potential, Understanding Risks

In his contribution, Gregor Wiedemann highlights the ambivalences that can arise from the use of AI tools in communication science research processes, as well as the necessity of precise risk assessment in this context.

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