How can we learn and teach more effectively, and how may technology play an active role in this? The research project in which I am involved focuses on the effect of training in Virtual and Mixed Reality environments. Within this context, three main questions are addressed: 1. How does the effect of training in Virtual and Mixed Reality compare to that of more traditional methods such as e-learning; 2. What is the effect of individual differences (experience, age, background) on training; 3. Can the effectiveness of training be predicted while the training is still in progress, based on real-time cognitive measurements made using a combination of sensing technologies such as eye tracking and EEG? For this research project I am working in close collaboration with fellow PhD candidate Angelique Tinga.