We study risk attitudes, ambiguity attitudes, and time preferences of 661 children and
adolescents, aged ten to eighteen years, in an incentivized experiment. We relate experimental
choices to field behavior. Experimental measures of impatience are found to be significant
predictors of health related field behavior and saving decisions. In particular, more impatient
children and adolescents are more likely to spend money on alcohol and cigarettes, have a higher
body mass index (BMI) and are less likely to save money. Experimental measures for risk and
ambiguity attitudes are only weak predictors of field behavior