Variable Key Both Studies Subject – Subject number gamble_number – Gamble number alternation_rate – Percentage of samples where participants switched from option to option riskypicked_experience - Was the riskier option the final consequential choice in decisions-from-samples prob_high_risky – Probability of the higher outcome in the riskier option out_high_risky – Higher outcome in the riskier option prob_low_risky - Probability of lower outcome in the riskier option out_low_risky – Lower outcome in the riskier option ev_risky – Expected valuation of the riskier option prob_high_safe - Probability of higher outcome in safer option out_high_safe – Higher outcome in safer option prob_low_safe – Probability of lower outcome in safer option out_low_safe – Lower outcome in safer option ev_safe - Expected valuation of the safer option ev_difference – Difference in expected values between the riskier and safer option riskypicked_described – Was the riskier option picked during decisions-from- description HL_risk_index – Proportion of risky options picked in Holt Laury task. Numeracy – Numeracy score Gender – Reported gender Age - reported age choice_alignment - Was the same option picked in decisions-from-description and decisions-from-samples no_samples_in_safe_or_risky – No samples drawn from the safer or riskier option EVe_risky – Average outcome of samples drawn from the riskier option in decisions-from-samples EVe_safe– Average outcome of samples drawn from the safer option in decisions-from-samples risky_samples – Number of samples from riskier option safe_samples – Number of samples from safer option education – Reported education level decision_time_described – Reaction time in decisions-from-description number_of_samples - Total number of samples drawn edu – Education level experienced_order – Order options encountered in decisions-from-samples described_order – Order options encountered in decisions-from-description not_included_in_main_analyses – Observation excluded from all analyses except for number of samples picked_inferior - Observation excluded from all analyses (picked a dominated option in Holt Laury task) proportion_risky – Proportion of samples from riskier option maximize_description – Picked the higher EV option decisions-from- description maximize_experience – Picked the higher experienced EV option in decisions- from-samples Study 2 risky_picked – Picked riskier option zero_described_one_experienced – Coded 0 if decisions-from-description or 1 if decisions-from-samples maximizing_choice – Higher EV option picked