Following with concrete research results, we will mention the conclusions of other influential neuroeconomic papers. In The Neural Basis of Financial Risk Taking, Kuhnen and Knutson tell us that financial investors systematically deviate from rationality when making their portfolio decisions, and in this way, in their study, they try to identify neural mechanisms responsible for such anomalies. Using fmri (neuroimaging), the authors examined whether, by anticipating investors' neural activity (i.e., By seeing what goes on inside their brain during decision making), optimal and suboptimal financial decisions can be predicted. They characterized two types of deviations with respect to the optimal investment decision (neoclassical): Risk Search Errors and Risk Aversion Errors.