Individuals are often asked to take decisions under risk and uncertainty. Particularly in some specific contexts, individual choices have also an impact on the community. For instance, consider the decrease in vaccinations in Europe, the gambling problem, and the obesity alarm. Therefore, understanding how individuals take decisions under uncertainty or in risky contexts (Biases in judgment and decision making, Risk Psychology, Statistical Thought, Adaptive and Communication Heuristics) is of primary importance for communication, education and public policies. On the one hand it is crucial to abandon the illusion that exhaustive communication is, by definition, informative. For instance, the formulation of the conditional probability in classical tasks does not guarantee the effective transmission of the independence of the hit rate from the base rate. In these kinds of tasks, data are all available, but subjects are able to understand them in the specific meanings proper to a specialized language only if these are adequately transmitted. On the other hand, the link created between economic and psychological analysis about decision making should be considered to investigate the architecture of choices. Finally, the insight problem solving is also one important topic for decision making: solving these problems is a paradigmatic case of human creativity and so their study provides a privileged route to understand and improve the processes underlying creative thought, innovation and all situations in which the mind has to face something new.