Ka Hei Carrie Lau

dblp:367/9314 · DBLP profile ↗
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5ranked-venue papers
5as first author
5since 2021 · last 2026
0009-0005-8838-3230ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Human-computer interaction and ubiquitous computing · 5 · 5 first-author · 5 since 2021
YearPublicationVenuePosition
2026 PromptMirror: Visualizing LLM Use to Support STEM Student Reflection
abstract
Large language models (LLMs) are increasingly embedded in students’ academic work, yet the increasing reliance can undermine learning depth and raise integrity concerns. While reflection has long been studied in HCI to foster awareness and behavior change, little is known about how to support students in reflecting on everyday LLM use. We present PromptMirror, a student-facing dashboard that processes LLM conversation logs and visualizes four perspectives, temporal, sentiment, intent, and thematic, to encourage reflection. We informed the design of PromptMirror with two focus groups (one expert and one student with four participants each) and subsequently conducted an online think-aloud with 20 university students who uploaded their own LLM use data. Findings provide preliminary evidence that PromptMirror may support students in recognizing their LLM use estimation gap and engaging in deeper reflection on LLM reliance. Our contributions are twofold: (1) a student-centric reflection system; (2) empirical insights into reflective analytics for everyday LLM tools.
Ka Hei Carrie Lau, Nada Terzimehic, Enkelejda Kasneci
DIS1
2026 Skin-Deep Bias: How Avatar Appearances Shape Perceptions of AI Hiring
abstract
Artificial intelligence is increasingly used in hiring, raising concerns about how applicants perceive these systems. While prior work on algorithmic fairness has emphasized technical bias mitigation, little is known about how avatar identity cues influence applicants' justice attributions in an interview context. We conducted a crowdsourcing study with 215 participants who completed an interview with photorealistic AI avatars varied in phenotypic traits (race and sex), followed by a standardized rejection. Using self-reports, sentiment analysis, and eye tracking, we measured perceptions of trust, fairness, and bias. Results show that racial mismatch heightened perceptions of ethnic bias, while partial match (sharing only one identity) reduced fairness judgments compared to both full and no match. This work extends the Computers-Are-Social-Actors paradigm by demonstrating that avatar appearances shape justice-related evaluations of AI. We contribute to HCI by revealing how identity cues influence fairness attributions and offer actionable insights for designing equitable AI interview systems.
Ka Hei Carrie Lau, Philipp Stark, Efe Bozkir, Enkelejda Kasneci
CHI1
2026 What Shapes Participant Data Quality? A Scoping Review and Case Study of Crowdsourced Webcam Eye Tracking in AI Interviews ETRA003
abstract
Webcam-based eye tracking is a cost-effective, scalable method for remote research that effectively reaches broader populations. However, uncontrolled environments and hardware diversity lead to inconsistent data quality in crowdsourcing. To assess current practices, we conducted a scoping review of crowdsourced eye-tracking from 2011–2025. The review confirms fragmented reporting and a lack of established quality benchmarks. To address this lack of predictive insight, we conducted a case study on AI fairness interviews ( N = 205) using the RealEye platform. Applying Ordered Logistic Regression (OLR) to the platform’s quality metric, we found that behavioral and technical factors significantly predict data quality. Specifically, within the RealEye platform, higher fixation counts, shorter sessions, and operating system choice yield significantly higher quality grades. Based on this review and platform-specific predictive insights, we provide actionable recommendations to enhance the reliability, transparency, and replicability of future crowdsourced webcam eye tracking in HCI and behavioral science.
Ka Hei Carrie Lau, Enkelejda Kasneci
Proc. ACM Hum. Comput. Interact.1
2025 Designing and Evaluating Gen-AI for Cultural Resilience
Ka Hei Carrie Lau
ICMI1
2025 Adaptive Gen-AI Guidance in Virtual Reality: A Multimodal Exploration of Engagement in Neapolitan Pizza-Making
abstract
Virtual reality (VR) offers promising opportunities for procedural learning, particularly in preserving intangible cultural heritage. Advances in generative artificial intelligence (Gen-AI) further enrich these experiences by enabling adaptive learning pathways. However, evaluating such adaptive systems using traditional temporal metrics remains challenging due to the inherent variability in Gen-AI response times. To address this, our study employs multimodal behavioural metrics, including visual attention, physical exploratory behaviour, and verbal interaction, to assess user engagement in an adaptive VR environment. In a controlled experiment with (n = 54) participants, we compared three levels of adaptivity (high, moderate, and non-adaptive baseline) within a Neapolitan pizza-making VR experience. Results show that moderate adaptivity optimally enhances user engagement, significantly reducing unnecessary exploratory behaviour and increasing focused visual attention on the AI avatar. Our findings suggest that a balanced level of adaptive AI provides the most effective user support, offering practical design recommendations for future adaptive educational technologies.
Ka Hei Carrie Lau, Sema Sen, Philipp Stark, Efe Bozkir, Enkelejda Kasneci
ICMI1