Christina Leppin

Junior Researcher Health Communication

Christina Leppin has been a researcher at the Leibniz Institute for Media Research | Hans-Bredow-Institut (HBI) since November 2022. As part of the transdisciplinary project “Health Digital – Fit for Apps and the Internet”, she is researching the media use and health information behaviour of over-60-year-olds and is responsible for the formative evaluation of the analogue and digital offers that have been developed.

Since April 2023, she has also been involved in the project Fertility and Ethics in Oncology.

Christina studied Empirical Cultural Studies at the Eberhard Karls University in Tübingen and European Ethnology at the Humboldt University in Berlin. During her studies, she focused on Science and Technology Studies.

Contact information

Christina Leppin

Junior Researcher Health Communication

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

Last update: 12.11.2025

Works by Christina Leppin

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 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.

Cover des Arbeitspapiers
Publikation Working Paper for Download

Responsibility in the Platform Quadrangle

This working paper by Tobias Mast comments on the European Court of Justice's recent Russmedia ruling and sets out the premises for a relationship between EU legal acts in the digital single market that respects fundamental rights.

ein Kabel führt in ein Smartphone
Projekt Project with Helmut Schmidt University

Data Collection and Analysis on TikTok and YouTube

In order to develop the best practices for collecting and analyzing data on short video platforms, Gregor Wiedemann's Media Research Methods Lab at the HBI is participating in a Helmut Schmidt University project examining the German Armed Forces' representation on TikTok and YouTube.

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