Electronic Supplementary Materials Reward currency modulates human risk preferences Task setup

safe option, and placed it on one side of the table (here, two quarters). (2) The experimenter covered the safe option with a bowl. (3) The experimenter placed a second (empty) bowl on the other side of the table, and occluded it. (4) The participant saw two possible risky outcomes (good and bad, here one dollar and one penny). Behind the occluder, the experimenter placed just one potential outcome under the risk bowl. (5) After removing the occluder, the experimenter reminded the participant of the safe value. (6) The participant could choose a bowl they preferred. Rewards shown are monetary rewards used in Study 3. 2 Study 1 supplemental analyses: Human risk preferences across currencies In addition to the repeated measures ANOVA reported in the main text, where we analyzed mean preferences for the risky option across trials, we also used generalized linear mixed models (GLMM) to analyze to choices as a binary outcome on a trial-by-trial basis. In particular, we used the glmer function from the LME4 software package (Bates, 2010) in R v. 3.1.0 (R Development Core Team, 2014) to fit binomial models with a logit link function usin