Joel Wester’s Page
Profile picture of Joel Wester

My name is Joel, and I am a postdoctoral researcher with Barry Brown in the Human-Centred Computing group at University of Copenhagen. I previously worked with Niels van Berkel and Henning Pohl as a PhD Fellow in the Human-Centred Computing group at Aalborg University. With degrees in cognitive science from Umeå University, psychology from Stockholm University, and philosophy from Södertörn University, I bring a multifaceted perspective to human-AI interaction.

I study how interactive systems can support people’s wellbeing, with a focus on AI-powered conversational interfaces and how design shapes the interaction. I aim to understand how these systems can better support users in daily tasks and emotional life. I draw across disciplines to design interactions that are meaningful and citizen-centred.


Latest

07/2025

One paper on LLMs and self-care accepted to IJHCS.

06/2025

🏆 Best Paper Award for Prompt Machine

04/2025

Two papers accepted to DIS’25, one on general practitioners and chatbots, and one on tangible interactions with LLMs.

01/2025

One paper accepted to CHI’25 on chatbots to reflect on aging and dementia.


Publications

24 2026 URL to appear
CURE: Communicating Uncertainty to foster Realistic Expectations via Human-Centered Design
Jasmina Gajcin, Jovan Jeromela, Joel Wester, Sarah Schömbs, Styliani Kleanthous, Karthikeyan Natesan Ramamurthy, Hanna Hauptmann, Rifat Mehreen Amin
Proceedings of the 31st International Conference on Intelligent User Interfaces (IUI’26 EA)
23 2025 URL PDF
Using LLMs for self-care: User and counsellor perspectives
Joel Wester, Sander de Jong, Henning Pohl, Niels van Berkel
International Journal of Human-Computer Studies (IJHCS)
22 2025 URL PDF
Challenging Futures: Using Chatbots to Reflect on Aging and Dementia
Rucha Khot*, Teis Arets*, Joel Wester*, Franziska Burger, Niels van Berkel, Rens Brankaert, Wijnand IJsselsteijn, Minha Lee
Proceedings of the 2025 CHI Conference on Human Factors in Computing Systems (CHI’25)
21 2025 URL PDF
General Practitioners’ Perspectives on a Pre-Consultation Chatbot for Shared Decision-Making
Mana Samiee, Joel Wester, Rune Møberg Jacobsen, Michael Skovdal Rathleff, Niels van Berkel
Proceedings of the 2025 ACM Designing Interactive Systems Conference (DIS’25)
20 2025 URL PDF
🏆 Prompt Machine: A Tangible Generative AI Tool for Supporting Children’s Learning and Literacy
Martin Lindrup, Rune Møberg Jacobsen, Joel Wester, Niels van Berkel, Dimitrios Raptis, Peter Axel Nielsen
Proceedings of the 2025 ACM Designing Interactive Systems Conference (DIS’25)
19 2025 URL PDF
Impact of Agent-Generated Rationales on Online Social Conformity
Sander de Jong, Rune Møberg Jacobsen, Joel Wester, Senuri Wijenayake, Jorge Goncalves, Niels van Berkel
Proceedings of the 2025 ACM Conference on Fairness, Accountability, and Transparency (FAccT’25)
18 2025 URL PDF
ToMinHAI at CUI’2025: Theory of Mind in Human-CUI Interaction
Qiaosi Wang, Joel Wester, Marvin Pafla, Minha Lee, Justin D. Weisz, Mei Si
Proceedings of the 7th ACM Conference on Conversational User Interfaces (CUI’25 EA)
17 2025 URL PDF
Prompt Machine: Enabling Physical LLM-Interactions for Learning
Rune Møberg Jacobsen, Martin Lindrup, Joel Wester, Niels van Berkel, Dimitrios Raptis, Peter Axel Nielsen
Proceedings of the 2025 ACM Designing Interactive Systems Conference (DIS’25 EA)
16 2025 PDF
Dirty Dishes and Disturbances: Can AI Keep the Peace?
Ayan Mohamed Nuur Ali, Kristine Broberg Agerbo, Joel Wester, Yue Fu, Rune Møberg Jacobsen, Niels van Berkel
Workshop: Fostering Eudaimonia (DIS’25 WS)
15 2025 PDF
Distributed Cognition for AI-supported Remote Operations: Challenges and Research Directions
Rune Møberg Jacobsen, Joel Wester, Helena Bøjer Djernæs, Niels van Berkel
Workshop: Human-AI Interaction for Augmented Reasoning (CHI’25 WS)
14 2024 URL PDF
🏆 “As an AI language model, I cannot”: Investigating LLM Denials of User Requests
Joel Wester, Tim Schrills, Henning Pohl, Niels van Berkel
Proceedings of the 2024 CHI Conference on Human Factors in Computing Systems (CHI’24)
13 2024 PDF
Theory of Mind and Self-Presentation in Human-LLM Interactions
Joel Wester, Rune Møberg Jacobsen, Sander de Jong, Naja Kathrine Kollerup, Helena Bøjer Djernæs, Niels van Berkel
Workshop: Theory of Mind in Human-AI Interaction (CHI’24 WS)
12 2024 URL PDF
Facing LLMs: Robot Communication Styles in Mediating Health Information between Parents and Young Adults
Joel Wester, Bhakti Moghe, Katie Winkle, Niels van Berkel
Proceedings of the ACM on Human-Computer Interaction (CSCW’24)
11 2024 URL PDF
“This Chatbot Would Never…”: Perceived Moral Agency of Mental Health Chatbots
Joel Wester, Henning Pohl, Simo Hosio, Niels van Berkel
Proceedings of the ACM on Human-Computer Interaction (CSCW’24)
10 2024 URL PDF
Exploring People’s Perceptions of LLM-generated Advice
Joel Wester, Sander de Jong, Henning Pohl, Niels van Berkel
Computers in Human Behavior: Artificial Humans
9 2024 URL PDF
How Can I Signal You To Trust Me: Investigating AI Trust Signalling in Clinical Self-Assessments
Naja Kathrine Kollerup, Joel Wester, Mikael B. Skov, Niels van Berkel
Proceedings of the 2024 ACM Designing Interactive Systems Conference (DIS’24)
8 2024 URL PDF
A formal understanding of computational empathy in interactive agents
Andreas Brännström, Joel Wester, Juan Carlos Nieves
Cognitive Systems Research
7 2024 URL PDF
Assessing Cognitive and Social Awareness among Group Members in AI-assisted Collaboration
Sander de Jong, Joel Wester, Tim Schrills, Kristina Secher, Carla Griggio, Niels van Berkel
Proceedings of the International Conference on Mobile and Ubiquitous Multimedia (MUM’24)
6 2023 URL PDF
Moral Transparency as a Mitigator of Moral Bias in Conversational User Interfaces
Joel Wester, Minha Lee, Niels van Berkel
Proceedings of the 5th ACM Conference on Conversational User Interfaces (CUI’23 EA)
5 2023 URL PDF
“You’ve Got a Friend in Me”: A Formal Understanding of the Critical Friend Agent
Joel Wester, Andreas Brännström, Juan Carlos Nieves, Niels van Berkel
Proceedings of the 11th International Conference on Human-Agent Interaction (HAI’23 EA)
4 2023 PDF
On Moral Manifestations in Large Language Models
Joel Wester, Julien Delaunay, Sander de Jong, Niels van Berkel
Workshop: Moral Agents for Sustainable Transitions (CHI’23 WS)
3 2023 PDF
The Challenge of Bias Mitigation in Clinical AI Decision Support
Niels van Berkel, Sander de Jong, Joel Wester, Naja Kathrine Kollerup
Workshop: Intelligent Health Interfaces (CHI’23 WS)
2 2023 PDF
Perceived Moral Agency of Non-Moral Entities: Implications and Future Research Directions for Social Robots
Joel Wester, Eike Schneiders, Niels van Berkel
Workshop: Perspectives on Moral Agency (HRI’23 WS)
1 2022 PDF
Towards a Formalization of the Critical Friend and Socio-Moral Decision-Making in Autonomous Systems
Joel Wester, Andreas Brännström, Juan Carlos Nieves
Workshop: Communication in Human-AI Interactions (IJCAI-ECAI’22 WS)