collaborators

12 papers

cs.CL2026

Prompt Stability Scoring for Text Annotation with Large Language Models

Christopher Barrie, Elli Palaiologou, Petter Törnberg

Researchers are increasingly using language models (LMs) for text annotation. These approaches rely only on a prompt telling the model to return a given output according to a set o…

cs.AI2026

Political Bias Audits of LLMs Capture Sycophancy to the Inferred Auditor

Petter Törnberg, Michelle Schimmel

Large language models (LLMs) are commonly evaluated for political bias based on their responses to fixed questionnaires, which typically place frontier models on the political left…

cs.SI2026

Polarization by Default: Auditing Recommendation Bias in LLM-Based Content Curation

Nicolò Pagan, Christopher Barrie, Chris Andrew Bail +1

Large Language Models (LLMs) are increasingly deployed to curate and rank human-created content, yet the nature and structure of their biases in these tasks remains poorly understo…

cs.CL2026

Large Language Models Reproduce Racial Stereotypes When Used for Text Annotation

Petter Törnberg, Petter Törnberg

Large language models (LLMs) are increasingly used for automated text annotation in tasks ranging from academic research to content moderation and hiring. Across 19 LLMs and two ex…

cs.CL2025

Computational Turing Test Reveals Systematic Differences Between Human and AI Language

Nicolò Pagan, Petter Törnberg, Christopher A. Bail +2

Large language models (LLMs) are increasingly used in the social sciences to simulate human behavior, based on the assumption that they can generate realistic, human-like text. Yet…

cs.CY2025

Shifts in U.S. Social Media Use, 2020-2024: Decline, Fragmentation, and Enduring Polarization

Petter Törnberg

Using nationally representative data from the 2020 and 2024 American National Election Studies (ANES), this paper traces how the U.S. social media landscape has shifted across plat…