In the Virtu/e Lab (virtual reality lab) people can become fully immersed in virtual worlds. On the one hand, this allows us to study behavior in the virtual worlds, that are invading our life. We consider it important to get better insights into the effects that such technologies can have on peoples' behavior and experiences. The virtual reality lab also enables us to precisely track peoples' behavior. And we can use the virtual reality to create situations that are otherwise very hard or impossible to create. With a simple button press, we can make people taller or shorter, we can create earthquakes, we can have other people that exactly imitate our participants' behavior, or we can have people that look exactly like them. This creates a wealth of opportunities for important and interesting research that would be impossible in everyday reality.