Kritina Holden is a Human Factors Technical Fellow with Leidos at the NASA Johnson Space Center. She has over thirty years of experience working in the area of Human Factors, with a focus on human-computer interaction (HCI), human-centered design, and usability. She has served as Principal Investigator for several NASA-funded research efforts, including studies onboard the International Space Station. She is also a subject-matter expert for all of the major spaceflight programs. Tina received her Ph.D. in Engineering Psychology from Rice University. She lives in Houston, Texas.