Figure S1: Prospect theory (PT) and expected utility (EU) theory forms for: (a) utility u and (b) decision weights ω . PT: b = 0 . 7, γ = 0 . 6. EU: b = 1, γ = 1. p$_{max}$ = 0 . 9. Figure S2: Wager ( w ) vs. subjective probability of successful bet ( p ) for prospect and expected utility theories. b, γ, p$_{max}$ as for Figure S1. S5 0 1 2 3 4 5 6 7 wager 0 1 2 3 4 5 6 utility EU PT a 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 probability 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 decision weight EU PT b 0.5 0.55 0.6 0.65 0.7 0.75 0.8 0.85 0.9 probability 0 1 2 3 4 5 6 7 wager EU PT