The GROK Lab is the research laboratory of Professor Geb Thomas in the Department of Mechanical and Industrial Engineering at the University of Iowa. At any one time the lab employes between half a dozen and a dozen graduate and undergraduate engineering students conducting research on people’s interaction with complex systems. The lab specializes in how people use technology to make professional decisions. Projects including studying how geologists use mobile robots to explore other planets, how search and rescue workers can use a robot to explore urban areas, and how doctors can use training simulators to improve their medical skills.