People use social cues to help them make decisions in diverse situations. This information is often scarce and uncertain but is also sometimes overwhelmingly abundant. With so many variables, how does the human decision-making process actually work? In this three-week course the experts from the University of Groningen and University of Warsaw will explain decision making in the complex world that we live in. Their unique approach encompasses not only conventional theories about social norms but also cutting-edge computer simulation frameworks that help make sense of human behaviour.