Alexander Walker is a senior director of learning research and design at MedStar Health Simulation Training and Education Lab, which is the educational development organization of one of the largest healthcare systems in the mid-Atlantic. He holds a PhD in human factors psychology from Clemson University. Early in his career, Alex engaged in research examining the effects of learning in different simulation environments on the impacts of performance and the development of motion sickness. His other research experience includes the investigation of team performance, the psychophysiological assessment of the workload and performance of individuals and teams.