This paper analyzes the empirical risk tolerance of individuals. Rare empirical evidence shows the role of personal behavior in both propensity toward financial risk and risk aversion. By using a test which mimics the financial decision process in a laboratory setting for 445 individuals, we obtained an ex-post experimental measure for individual risk tolerance. Predictive classification models allow us to evaluate the forecasting accuracy of two alternative risk tolerance assessments: a psychometrically derived questionnaire and a psycho- physiological experiment. Our findings show that misclassifications resulting from the questionnaire are massive: individuals asked to self-assess their risk tolerance reveal a high probability of failing...