Recent developments in virtual reality (VR) technology have the potential to revolutionize the way economists do experimental research. With Oculus’ light and affordable head mounted display (HMD) human subjects can literally move and use objects in virtual spaces and interact with others....

In this paper, we analyze a principal's optimal feedback policy in tournaments. We close a gap in the literature by assuming the principal to be unable to commit to a certain policy at the beginning of the tournament. Our analysis shows that in equilibrium the principal reveals in-termediate...