Welcome!
Welcome to the echolab website at Virginia Tech. Our mission is to explore and develop methods to foster empathic interactions among individuals using computational systems. Our research is grounded in the empathy framework depicted below. It focuses on three key themes: computational tools for perspective sharing by empathizers, computers as an expressive medium for targets, and the facilitation of empathic communication for both groups. Additionally, we are committed to studying how to create safe environments where targets can be safely vulnerable.

echolab is looking for MS/Ph.D. students interested in designing, building, and studying novel interactive systems. We plan to admit one or two Ph.D. students for Fall 2027. Please apply through the CS@VT program and list me as a potential advisor.
Because I receive many inquiries, I’m generally unable to meet with prospective students individually before reviewing the full applicant pool. After applications are reviewed, I may reach out to applicants whose interests closely match ongoing projects in the group. So save your email.
To get a sense of fit, please read my recent publications on which I am the last author (these reflect my students’ work and the lab’s current directions). If, after reading several of them, you are not sure or that does not excite you, echolab may not be the best match.
If you are already at Virginia Tech and would like to do research with echolab, please fill out this survey and I will respond: https://forms.gle/gfsvheq8U6YNrGby7
We envision that echolab is…
- A platform where members develop into independent researchers and achieve their career goals.
- An opportunity for individuals to discover that giving—through teaching, helping, sharing, and collaborating—enhances their own growth and success.
- A source of social capital that enables learning from each other.
- A community where inclusion is prioritized, and members feel connected.
- A group that contributes to society and the world by producing and disseminating new knowledge.
- An environment where individuals can be more productive than in any other setting.
- A socio-technical system designed to scale the above visions.
Recent News
- (2026/10) We received a new NSF grant, “HCC: AI-Assisted Classroom Orchestration for Collaborative Programming Learning at Scale,” with Yan Chen (PI), Cliff Shaffer, and Gary Kirk.
- (2026/8) Sang Won is serving as an Associate Chair for ACM CHI 2027.
- (2026/10) Our paper was accepted to ACM UIST 2026.
- MAESTRO: Adapting GUIs and Guiding Navigation with User Preferences in Conversational Agents with GUIs
- (2026/10) Our paper and poster were presented at ACM CSCW 2026.
- (2026/8) Sang Won received the Student Mentoring Award from the Department of Computer Science at Virginia Tech.
- (2026) Three journal papers were published.
- The Precarity of Trust: Understanding Tensions in Information Systems for Humanitarian De-Mining in Rural Colombia (TOCHI)
- Toward Context-Aware and Personalized Sit-Stand Desk Interventions: Insights from a Field Observational Study (IJHCS)
- Explore Together: Enhancing Learner Engagement with Handheld Virtual Reality in Informal Science Education (PRESENCE)
- (2026/8) Congratulations to Yuhang Zhang for successfully defending Master’s thesis.
- (2026/8) We presented a paper at the ICER conference.
- (2026/6) Congratulations to Andrew Jelson for successfully defending the dissertation. He will start his post-doc position at the University of Iowa! (PI: Gahyun Callie Sung)
- (2026/6) Congratulations to Daniel Manesh for successfully defending the dissertation. He will start his post-doc position at ETH Zürich (PI: April Wang)
- (2026/5) Congratulations to Carlos Augusto Bautista Isaza for successfully defending the dissertation.
- (2026/4) Our CHOIR Paper received the Best Paper Honorable Mention Award at CHI 2026!
- (2026/4) We presented seven papers at the ACM CHI conference
- CHOIR: A Chatbot-mediated Organizational Memory Leveraging Communication in University Research Labs
- “Having Lunch Now”: Understanding How Users Engage with a Proactive Agent for Daily Planning and Self-Reflection
- An Empirical Study to Understand How Students Use ChatGPT for Writing Essays
- When Less Can Be More: Evaluating the Impact of Animated and Interactive Demonstrations in Voice-Assisted Counting Games for Young Children
- “Are we writing an advice column for Spock here?” Understanding Stereotypes in AI Advice for Autistic Users
- LingoQ: Bridging the Gap between ESL Learning and Work through AI-Generated Work-Related Quizzes
- From Vulnerable to Resilient: Examining How Teens and Parents Respond to Protect Adolescents from Cybergrooming Advances
- (2026/4) We presented one paper at the ICSE conference.
- (2025/11) We presented a paper at the ACM CSCW conference
News (roughly) older than a year will be available here.
Research Highlights

(ongoing) Facilitating socially constructed learning through a shared, mobile-based virtual reality platform in informal learning settings

TBD

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