Jean Costa

Senior Research Scientist


I am a Senior Research Scientist at DawnLight, where I am helping to develop human-centered AI solutions for healthcare. Before DawnLight, 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 Microsoft Research, Facebook Reality Labs, Telefónica Research, Siemens, and Vale.

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


  • Human-Computer Interaction
  • Ubiquitous Computing
  • Mobile Health


  • 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