collaborators

7 papers

cs.CY2026

Self-directed online information search can affect policy support: a randomized encouragement design with digital behavioral data

Celina Kacperski, Roberto Ulloa, Peter Selb +3

As citizens increasingly encounter political information in digital environments, understanding whether this engagement shapes their policy views has become a central concern. Draw…

cs.CY2026

The Knowledge Gap in a High-Choice Media Environment: Experimental Evidence from Online Search

Roberto Ulloa, Tiedemann Leonard, Peter Selb +1

Persistent inequalities in political knowledge are a central concern in political communication. We organize the mechanisms underlying the knowledge-gap literature by distinguishin…

cs.CY2025

Characteristics of ChatGPT users from Germany: implications for the digital divide from web tracking data

Celina Kacperski, Denis Bonnay, Juhi Kulshrestha +3

A major challenge of our time is reducing disparities in access to and effective use of digital technologies, with recent discussions highlighting the role of AI in exacerbating th…

cs.CY2025

Opting Out of Generative AI: a Behavioral Experiment on the Role of Education in Perplexity AI Avoidance

Roberto Ulloa, Juhi Kulshrestha, Celina Kacperski

The rise of conversational AI (CAI), powered by large language models, is transforming how individuals access and interact with digital information. However, these tools may inadve…

cs.HC2025

Enhancing autonomous vehicle acceptance with age and education sensitive simulation interventions: An experimental trial

Celina Kacperski, Roberto Ulloa, Jeremy Wautelet +2

The familiarity principle posits that acceptance increases with exposure, which has previously been shown with in vivo and simulated experiences with connected and autonomous vehic…

cs.IR2025

Tag-Pag: A Dedicated Tool for Systematic Web Page Annotations

Anton Pogrebnjak, Julian Schelb, Andreas Spitz +2

Tag-Pag is an application designed to simplify the categorization of web pages, a task increasingly common for researchers who scrape web pages to analyze individuals' browsing pat…