Kelley J. Slack, Ph.D., joined the Science and Research team at Birkman International after almost twenty years working as part of the Behavioral Health and Performance group at NASA—Johnson Space Center. There, her work centered on the psychological and psychiatric selection of astronauts. At Birkman, Kelley focuses on maintaining the scientific rigor of the assessment and leading research to understand the complex relationships between personality and work. Kelley studied behavioral sciences at the London School of Economics and graduated with honors from Rice University with double majors in Business and Behavioral Science. After gaining international and domestic business experience, Kelley returned to school and earned her Ph.D. in Industrial and Organizational Psychology from the University of Houston with a minor in Statistics. She is a licensed psychologist in the State of Texas.