In everyday decision-making there is often a need to integrate complex data arising from diverse sources. How people handle such complexity and, in particular, how they make use of time to process the relevant information accurately and efficiently is unclear. In this talk, Eldar will present fine time-scale magnetoencephalographic analyses that expose in unprecedented detail the temporal evolution of the computations that people employ to integrate complex information. The findings reveal key variations in the neural processes of information integration, with contrasting consequences for an individual’s maximal accuracy and their ability to cope with complexity.