Gutenberg Open Science

The Open Science Repository of Johannes Gutenberg University Mainz.

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Recent Submissions

ZeitschriftenaufsatzAccess status: Open Access ,
Generative AI versus human conversational agent for reducing procrastination : a randomized pilot trial
(2026)
Hennemann, Severin
;
Fähnrich, Julia M.
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Tietze, Cornelius
;
Witthöft, Michael
;
Jungmann, Stefanie M.
Objectives The use of generative artificial intelligence (AI) based chatbots in mental health interventions is rapidly evolving, but evidence of their efficacy and safety is scarce. This randomized pilot trial investigated the feasibility, efficacy, mechanisms, and unwanted effects of a generative AI chatbot (ChatGPT-4) vs. human conversational agent as a cognitive behavioral micro-intervention for procrastination. Methods 62 university students (Mage 23.60 years, 93.5% female) were analyzed and assigned (concealed) to a three-session chat-based intervention with either the chatbot or human conversional agent. Outcomes were assessed using questionnaires at baseline, post-intervention, and 6-month follow-up. The primary outcome was self-reported procrastination. Secondary outcomes included depression, anxiety, worry, and rumination. Additionally, unwanted negative effects and common factors of therapeutic change were assessed. Results Intention-to-treat analyses revealed a non-significant group × time interaction effect (p = .117, η2p = 0.05). Unwanted negative effects at post-assessment were reported by 43.1% of participants, with no significant group difference. Common factors were rated similarly across groups and did not mediate change in procrastination. Conclusions Our findings do not indicate superiority of either conversational agent and both interventions had comparable, rather high rates of unwanted effects, indicating that more research in larger, clinically meaningful samples is needed to confirm the efficacy and safety of AI-based (micro-)interventions.
SammelbandAccess status: Open Access ,
Mainstream news media trust : antecedents, consequences, and remedies
(2026)
Fawzi, Nayla
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Strömbäck, Jesper
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Tsfati, Yariv
Bringing together some of the foremost scholars in the field, this book offers a critical introduction to mainstream news media (dis)trust and its social and political conditions and consequences. Drawing on qualitative and quantitative approaches, the chapters in Mainstream News Media Trust summarize what we know about news media trust today and set out a research agenda to advance our understanding of the topic in the future. The chapters address issues such as trends in news media trust, what factors shape and moderate news media trust, how much news media trust a society needs, how truthful news reporting and trust are related, how institutional trust and false stories shape public opinion, and contemporary challenges to news media trust. In addition, they consider what measures different news media have taken to increase audience trust and engagement. This book adopts a comparative global outlook to provide a well-rounded state of the field art. Mainstream News Media Trust is essential reading for advanced students and researchers in Journalism, Digital Media, and related disciplines.
MonographieAccess status: Open Access ,
Posthumane Körper? : Weshalb wir auch mit Wearables, Prothesen und Implantaten Mensch bleiben
(2026)
Garbe, Toni
Menschen erweitern ihre Körper zunehmend mit Technik. Während Kritiker*innen diskutieren, ob dies zu wachsender Ungleichheit oder gar zur Entfremdung vom Humanen führt, erscheinen Wearables, Prothesen und Implantate im Alltag erstaunlich unspektakulär. Toni Garbe zeigt anhand einer Analyse medialer Darstellungen, wie heterogene Interpretationsangebote Technik entproblematisieren: Je nach Kontext wird sie zur Ko-Akteurin, zum Ersatzkörperteil oder zu einem gleichwertigen menschlichen Körperteil, kaum jedoch zu einem posthumanen Moment. In der Entproblematisierung technisch angereicherter Körper offenbaren sich so Kontinuitäten und Verschiebungen im Verhältnis von Mensch und Technik – und auch Gründe, warum wir trotz Technik am Körper nicht zu Cyborgs werden.