Jean Costa

Research Scientist

Toyota Research Institute

I am a Research Scientist in Human-Computer Interaction at Toyota Research Institute (TRI), where I am designing, developing, and evaluating human-centered AI solutions to improve safety and well-being. Before TRI, I was a Postdoctoral Scholar in the Computer Science department at Stanford University, where I was supervised by James Landay. I received my PhD in Information Science from Cornell University, where I was advised by Tanzeem Choudhury. I have previously worked as a researcher or intern at DawnLight, Microsoft Research, Facebook Reality Labs, Telefónica Research, Siemens, and Vale.

My research spans the areas of Human-Computer Interaction and Ubiquitous Computing. More specifically, my work focuses on designing, developing and evaluating mobile and ambient technologies to sense and improve people's health, safety, and well-being.


  • Human-Computer Interaction
  • Ubiquitous Computing


  • PhD in Information Science, 2019

    Cornell University



Wearable device that regulates anxiety unobtrusively using haptic feedback


Smartwatch app to improve cognitive performance in the moment using haptic feedback

Interpersonal Conflicts

Regulating anxiety during interpersonal conflicts using voice modulation

Alertness Scanner

Android application that infers alertness from pictures taken by smartphones