Dr. Lisa Merten

Senior Researcher Media Use & Digital Communication

Lisa Merten has been working as a researcher at the Leibniz Institute for Media Research | Hans-Bredow-Institut (HBI) in Research Program 1 “Transformation of Public Communication – Journalistic and Intermediary Functions in the Process of Opinion Formation” since 2015. Her research interests include media use in digital media environments, especially with regard to the reception and effects of information-oriented media offerings, personalisation processes in publics shaped by algorithms and the development of digital methods.

As principal investigator and project coordinator, Lisa is currently leading the computational social science project “Political polarization and individualized online information environments: A longitudinal tracking study (POLTRACK)” investigating the interplay of individual information repertoires and the polarization of political opinions over time.  In this collaborative project between the HBI, GESIS, and the Universities of Bremen and Konstanz, they collect tracking and survey data from online panelists and conduct automated online analysis of the media content seen by the panelists.

In addition, in the DFG project “Public Connection” Lisa and her colleagues are investigating how users connect to different publics through the way they use media and other communicative practices.

Lisa was co-PI at the Research Institute Social Cohesion in the subproject “Media Use and Social Cohesion”. Together with Hannah Immler she ran a network and content analysis of Instagram accounts to examine whether and how political influencers in social media can reach populations without much information-oriented social media use.

In the summer semester of 2021, she substituted an assistant professor of Computational Social Science at the Center for Data and Methods at the University of Konstanz on a part-time basis. She has also taught at the Universität Hamburg, University of Augsburg, and Kiel University of Applied Sciences.

Career Path

Her cumulative dissertation project at Universität Hamburg focused on practices of news use on social networking platforms. Her dissertation article on practices of personal news curation on social media based on data from the Reuters Institute Digital News Survey named Article of the Year 2021 by Digital Journalism.

Lisa studied communication science at the University of Leipzig, at the TU Dresden as well as at the Universiteit van Amsterdam and Boston University with a scholarship from the Studienstiftung des Deutschen Volkes. After and during her studies, she worked in market and media research (e.g. Sinus Institute, ZDF Media Research, Gruner & Jahr, mindline, election campaign Elisabeth Warren for Massachusetts).

Contact information

Dr. Lisa Merten

Senior Researcher Media Use & Digital Communication

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

Last update: 19.01.2026

Works by Dr. Lisa Merten

Publikation Recently Published

Visualizing Regulatory Ecosystems: The AI Act as a Case Study

The article by Magdalena Stratmann, Tobias Mast, and others was developed as part of the STEAM project, "Informing Regulatory Reasoning on Algorithmic Systems in Societal Communication with STEAM." It introduces Architectural Ecosystem Modeling, a visual method that makes the institutional structures of the AI Act visible. This method analyzes responsibilities and dependencies and identifies gaps, overlaps, and opportunities for coordination within the regulatory framework.

eine Frau hinter einem Tisch mit ablehnender Haltung gegenüber Zeitungen auf dem Tisch.
Projekt New Project!

Practices of News Avoidance and Their Implications for Public Connection

What are the effects of news avoidance on belonging to different publics and on political participation? And to what extent do these dynamics contribute to the fragmentation of public spheres? This study examines the effects of different practices of news avoidance on individuals‘ public connection.

Projekt BMFTR Project

Podcasts: Actors, Topics, and Misinformation

As audio media, such as podcasts, become more widely used, the risks of them distributing misinformation, disinformation, and fake news increase. The collaborative project “Systematic Observation of New Auditive Risks” (SONAR) examines the structure of online audio media offerings and develops methods for identifying relevant narratives and manipulation strategies.

Publikation Merz issue and Podcast Available!

Thoughts on the Debate Over Media Bans

Dr. Claudia Lampert, together with Klaus Lutz (Parabol Media Center), edited the latest issue of the media education journal “merz” (2/2026). The issue is titled “Everything Under Control? Thoughts on the Debate Over Media Bans.” Dr. Stephan Dreyer also contributed an article.

Publikation Available for Download

Annual Report 2023-2025

Evaluation, growth, our 75th anniversary, and a new building. The years from 2023 to 2025 were challenging yet fruitful. Our research output was impressive, and our social impact was significant. This annual report provides a brief overview of our activities.

Publikation Open Access Publication

Determinants of Verification Behavior in Generative Search

Generative AI is being increasingly integrated into search engines, but it has been criticized for producing content that sounds plausible yet is sometimes inaccurate. Little is currently known about the factors that prompt users to verify these responses. The study by Eva-Luise Knor, Michael V. Reiss, Judith Möller, and Lisa Merten addresses this knowledge gap.

Publikation Recently Published

Platforms, Online Surveillance, and the European Union: The Digital Services Act (DSA)

In their open-access article, Prof. Dr. Judith Möller, Ronan Ó Fathaigh, Bengi Zeybek, and Rocco Bellanova explore how the DSA facilitates public and private surveillance practices regarding content disseminated on online platforms.

Cover of issue 2/2026 M&K
Publikation Open Access Publication

M&K 2/2026 Has Been Published

The February 2026 issue of M&K features articles that explore the understanding of roles and the transformative potential of peripheral actors in the DACH region. Other articles examine developments in sports coverage in German daily newspapers from 2011 to 2021 and the usage patterns of ChatGPT, as well as anthropomorphic role attributions. You can download all of these articles free of charge.

Front Page of the Working Paper
Publikation Working Paper Available for Download

Babies and Toddlers in Family Influencing

In what ways and how often are babies and young children (ages 0–5) depicted on commercially oriented German-language social media profiles on Instagram, TikTok, and YouTube? Stephan Dreyer, Claudia Lampert, Kira Thiel, and others analyze this question using qualitative and quantitative methods. They also critically discuss the findings in light of the applicable legal framework and media ethics considerations.

Publikation Open Access Publication

Assessing Age Assurance Technologies: Effectiveness, Side-Effects, and Acceptance

In the article “Assessing Age Assurance Technologies: Effectiveness, Side-Effects, and Acceptance,” Dr. Wouter Lueks, Dr. Stephan Dreyer, Prof. Dr. Hannes Federrath, and Prof. Dr. Judith Simon analyze existing age verification methods.

Publikation Review of a Dissertation

Government Public Relations in New Media

For years, the democratic legitimacy of government public relations has been a topic of discussion in academic literature and constitutional jurisprudence. Tobias Mast reviews a recently published dissertation on the subject, exploring the untapped potential of interdisciplinary legal scholarship in relation to commonly accepted empirical assumptions.

Publikation Article for Friedrich-Ebert-Stiftung

Platform Badges for Civic Communication

Digital platforms have become central infrastructures for political communication and social negotiation processes. In his article, Jan Rau examines platform badges, which are tools that platforms use to fulfill their obligation to mitigate risk by creating positive incentives for users to adhere to certain communicative norms.

1 2 3 13

Page 1 from 13

Newsletter

Information about current projects, events and publications of the institute.

Subscribe now