CoBreath: Designing a VR-Based Dyadic Biofeedback System to Support Breathing Exercise for Breast Cancer SurvivorsChronic stress and anxiety severely affect breast cancer survivors’ (BCSs) mental health and well-being. Peer support has been shown to enhance psychological empowerment, while biofeedback offers a promising approach to improve physiological relaxation through self-regulation. However, few studies explored combining both for BCSs. We conducted a formative study with clinicians and BCSs to identify requirements and preferences for VR biofeedback. Informed by the findings, we proposed a VR-based dyadic biofeedback system, Cobreath, which integrates breathing and heart rate variability (HRV) feedback into a calming virtual environment, allowing two users to practice breathing-focused relaxation simultaneously. Through a clinical user study with ten clinicians and a between-subjects study with 32 BCSs, we demonstrated that Cobreath’s dyadic mode improved biofeedback effectiveness and provided a better user experience compared to the individual mode. We further discuss insights and design considerations for developing dyadic VR-biofeedback applications to support the mental well-being of BCSs and potential applications.2026QWQi Wang et al.Tongji UniversityVR Medical Training & RehabilitationAffective Feedback & Emotion Regulation InterfacesMental Health Apps & Online Support CommunitiesCHI
ASafePlace: User-Led Personalization of VR Relaxation via an Art Therapy ActivityTo overcome the lack of deep personalization in standard biofeedback methods, we introduce ASafePlace, a system utilizing an AI-powered, art-therapy-inspired exercise called The Safe Place, to create a personalized VR biofeedback experience. In our system, users sketch a personal sanctuary from memory, which is then transformed into a customized 360° virtual environment with personalized audio guidance for relaxation training. A study with 52 participants showed this approach effectively reduced anxiety and increased user presence, while the integration of art-therapy-inspired activity and biofeedback produced strong improvements in physiological relaxation, measured by heart rate variability and respiration rate. Qualitative results showed how participants' sense of familiarity and presence was enhanced by the symbolic elements and natural sanctuaries created from their autobiographical memories. Our findings demonstrate that art-therapy-inspired activity is a powerful tool for creating highly effective and individualized relaxation experiences, naturally connecting the virtual environment to a user's core memories and emotions.2026CZChuyang Zhang et al.Southern University of Science and TechnologyImmersion & Presence ResearchVR Medical Training & RehabilitationAffective Feedback & Emotion Regulation InterfacesCHI
Knitting with unknown trees: assembling a more-than-human practiceIn this pictorial, we explore alternative ways of knowing urban trees through a more-than-human lens. Using a municipal tree dataset, we focus on “unknown” trees—entries unclassified due to error, decay, or absence—highlighting the limits of quantification and fixed knowledge systems. Urban trees, while critical for ecosystems, are often shaped by technological interventions (e.g., GIS, IoT sensors, AI diagnostics) that prioritize their utility over other expressions. We engage in knitting as a material inquiry to foreground nonhuman agencies and relational entanglements. Through reflective shifts and compromises, this project questions normative design practices, seeking to amplify nonhuman participation. We make two contributions. Firstly, we offer insights into fostering alternative, relational engagements with urban ecologies. Secondly, we reflect on our process of surfacing and working with agentic capacities, articulating guidance for other design researchers. Through this, we advocate for fragmented approaches that embrace complicity and complexity in more-than-human design.2025DODoenja Oogjes et al.Sustainable HCIHuman-Nature Relationships (More-than-Human Design)DIS
A language of one’s own: annotations and layering as design materialAs designers, we often use annotations to add information and reflection to our work. We would like to suggest that these annotations let personal design languages emerge. We experiment with the materiality of the pictorial format itself to show how such languages emerge from a particular body of work, as it travels from sketches, text, and various material artefacts. This emergent language uses annotations and layers as design materials, providing access to the nuances in the thinking behind our research and making processes. Through this language, the voice of the maker emerges revealing subjective and situated knowledges that would not be available otherwise. We reflect on these insights and share a set of strategies using annotations and layerings for others to use. As a result, we contribute an approach of annotations and layering to engage complexity when making, reflecting, and disseminating design research.2025EVElvia Vasconcelos et al.Design FictionPrototyping & User TestingDIS
What Comes After Noticing?: Reflections on Noticing Solar Energy and What Came NextMany design researchers have been exploring what it means to take a more-than-human design approach in their practice. In particular, the technique of “noticing” has been explored as a way of intentionally opening a designer’s awareness to more-than-human worlds. In this paper we present autoethnographic accounts of our own efforts to notice solar energy. Through two studies we reflect on the transformative potential of noticing the more-than-human, and the difficulties in trying to sustain this change in oneself and one’s practice. We propose that noticing can lead to activating exiled capacities within the noticer, relational abilities that lie dormant in each of us. We also propose that emphasising sense-fullness in and through design can be helpful in the face of broader psychological or societal boundaries that block paths towards more relational ways of living with non-humans.2025AMAngella Mackey et al.Amsterdam University of Applied Sciences, Civic Interaction Design groupSustainable HCIHuman-Nature Relationships (More-than-Human Design)CHI
Back to School - Sustaining Recurring Child-Robot Educational Interactions After a Long BreakMaintaining the child-robot relationship after a significant break, such as a holiday, is an important step for developing sustainable social robots for education. We ran a four-session user study (n = 113 children) that included a nine-month break between the third and fourth session. During the study, participants practiced math with the help of a social robot math tutor. We found that social personalization is an effective strategy to better sustain the child-robot relationship than the absence of social personalization. To become reacquainted after the long break, the robot summarizes a few pieces of information it had stored about the child. This gives children a feeling of being remembered, which is a key contributor to the effectiveness of social personalization. Enabling the robot to refer to information previously shared by the child is another key contributor to social personalization. Conditional for its effectiveness, however, is that children notice these memory references. Finally, although we found that children's interest in the tutoring content is related to relationship formation, personalizing the topics did not lead to more interest in the content. It seems likely that not all of the memory information that was used to personalize the content was up-to-date or socially relevant.2024MLMike E.U. Ligthart et al.Special Education TechnologySocial Robot InteractionRobots in Education & HealthcareHRI
Design Specifications for a Social Robot Math TutorTo benefit from the social capabilities of a robot math tutor, instead of being distracted by them, a novel approach is needed where the math task and the robot's social behaviors are better intertwined. We present concrete design specifications of how children can practice math via a personal conversation with a social robot and how the robot can scaffold instructions. We evaluated the designs with a three-session experimental user study (n = 130, 8-11 y.o.). Participants got better at math over time when the robot scaffolded instructions. Furthermore, the robot felt more as a friend when it personalized the conversation.2023MLMike E.U. Ligthart et al.Collaborative Learning & Peer TeachingSocial Robot InteractionHRI
Designing for self-awareness: supporting students' reflexive interactions based on photosEducators in professional higher education experience difficulties addressing students’ self-awareness in their courses. The topic is often dismissed by students as ‘vague’ or ‘irrelevant’. This is detrimental for learning since knowing who you are and who you want to be is crucial: it guides behaviour and helps to feel balanced and in control. Support is needed to trigger students’ self-awareness and to make this process less demanding. In this paper we present guidelines for interactive triggers supporting students in developing their self-awareness. We asked students to discuss self-made photos in small groups and offered them three paper prototypes of triggers to work with. Questionnaire results and analysis of students’ discussions resulted in insights on how these triggers provoke distinct interaction and support self-awareness. Insights in advantages and disadvantages of the triggers can be used to design and implement innovative interactive systems that engage students in the process of developing self-awareness.2022MBMarije ten Brink et al.Collaborative Learning & Peer TeachingUser Research Methods (Interviews, Surveys, Observation)C&C
Conversational Futures: Emancipating Conversational Interactions for Futures Worth WantingWe present a vision for conversational user interfaces (CUIs) as probes for speculating with, rather than as objects to speculate about. Popular CUIs, e.g., Alexa, are changing the way we converse, narrate, and imagine the world(s) to come. Yet, current conversational interactions normatively may promote non-desirable ends, delivering a restricted range of request-response interactions with sexist and digital colonialist tendencies. Our critical design approach envisions alternatives by considering how future voices can reside in CUIs as enabling probes. We present novel explorations that illustrate the potential of CUIs as critical design material, by critiquing present norms and conversing with imaginary species. As micro-level interventions, we show that conversations with diverse futures through CUIs can persuade us to critically shape our discourse on macro-scale concerns of the present, e.g., sustainability. We reflect on how conversational interactions with pluralistic, imagined futures can contribute to how being human stands to change.2021MLMinha Lee et al.Eindhoven University of TechnologyMultilingual & Cross-Cultural Voice InteractionAgent Personality & AnthropomorphismTechnology Ethics & Critical HCICHI
The Curious Case of the Transdiegetic Cow, or a Mission to Foster Other-Oriented Empathy Through Virtual RealitySocially aware persuasive games that use immersive technologies often appeal to empathy, prompting users to feel and understand the struggles of another. However, the often sought-after 'standing in another's shoes' experience, in which users virtually inhabit another in distress, may complicate other-oriented empathy. Following a Research through Design approach, we designed for other-oriented empathy – focusing on a partaker-perspective and diegetic reflection – which resulted in Permanent; a virtual reality game designed to foster empathy towards evacuees from the 2011 Fukushima Daiichi nuclear disaster. We deployed Permanent 'in the wild' and carried out a qualitative study with 78 participants in the Netherlands and Japan to capture user experiences. Content Analysis of the data showed a predominance of other-oriented empathy across countries, and in our Thematic Analysis, we identified the themes of 'Spatial, Other, and Self -Awareness', 'Personal Accounts', 'Ambivalence', and 'Transdiegetic Items', resulting in design insights for fostering other-oriented empathy through virtual reality.2020MKMartijn J.L. Kors et al.Eindhoven University of Technology & Amsterdam University of Applied ScienceSocial & Collaborative VRInteractive Narrative & Immersive StorytellingCHI
The Blockchain and the Commons: Dilemmas in the Design of Local PlatformsThis paper addresses the design dilemmas that arise when distributed ledger technologies (DLT) are to be applied in the governance of artificial material commons. DLTs, such as blockchain, are often presented as enabling technologies for self-governing communities, provided by their consensus mechanisms, transparent administration, and incentives for collaboration and cooperation. Yet, these affordances may also undermine public values such as privacy and displace human agency in governance procedures. In this paper, the conflicts regarding the governance of communities which collectively manage and produce a commons are discussed through the case of a fictional energy community. Three mechanisms are identified in this process: tracking use of and contributions to the commons; managing resources, and negotiating the underlying rule sets and user rights. Our effort is aimed at contributing to the HCI community by introducing a framework of three mechanisms and six design dilemmas that can aid in balancing conflicting values in the design of local platforms for commons-based resource management.2020NCNazli Cila et al.Amsterdam University of Applied SciencesSustainable HCIEcological Design & Green ComputingEnergy Conservation Behavior & InterfacesCHI