Mariano Sigman was born in Argentina and grew up in Barcelona, Spain. He obtained a master degree in physics at the University of Buenos Aires and a PhD in neuroscience in New York. He moved to Paris to investigate decision making, cognitive architecture and consciousness. In 2006 he founded the Integrative Neuroscience Laboratory, at the University of Buenos Aires,an interdisciplinary group integrated by physicists, psychologists, biologists, engineers, educational scientists, linguists, mathematicians, artists and computer scientists. His lab has developed an empirical and theoretical approach to decision making, with special focus on understanding the construction of confidence and subjective beliefs.