Scientists and philosophers have long pondered the intricacies of human decision making. Are they primarily deliberative or are they more prone to emotions? This course brings together latest findings from economics, psychology and neuroscience to discuss how humans go about making economic decisions and factors that affect them. Such decisions include ones at the level of individuals, within small groups and in more anonymous and impersonal market settings. The course looks at how social norms as well as cognitive biases and errors affect our day-to-day judgements and how we can make more informed decisions.