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.
Chaplains’ Reflections on the Design and Usage of AI for Conversational Care Joel Wester, Samuel Rhys Cox, Henning Pohl, Niels van Berkel
Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems (CHI’26)
Polite But Boring? Trade-offs Between Engagement and Psychological Reactance to Chatbot Feedback Styles
Samuel Rhys Cox, Joel Wester, Niels van Berkel
Proceedings of the 2026 CHI Conference on Human Factors in Computing Systems (CHI’26)
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)
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)
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)
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)
🏆 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)
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)
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)
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)
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)
🏆 “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)
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)
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)
“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)
Exploring People’s Perceptions of LLM-generated Advice Joel Wester, Sander de Jong, Henning Pohl, Niels van Berkel
Computers in Human Behavior: Artificial Humans
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)
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)
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)
“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)
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)
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)
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)
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)