30 interactive experiments exploring how your brain makes choices, fears losses, and discounts the future.
Pick from 3 jams, then 24. See how choice quantity affects your decision time.
5 vs 15 vs 40 menu items. How long until you choose?
10 questions to reveal your decision-making style.
Watch how a third option changes your preference between two.
Configure a product with 3 vs 12 options. Track time and confidence.
15 trivial choices, then one that matters. See quality degrade.
20 options. Remove one at a time. When are you ready to choose?
Make choices and rate anticipated regret. Learn about counterfactual thinking.
Scenarios where defaults vary. Track your default acceptance rate.
Full info, one decision. How long do you deliberate vs optimal?
10 gambles with positive expected value. Accept or reject each. Reveals your loss aversion ratio.
You own an item. Would you sell it for less than you would pay to buy it?
5 scenarios where you have already invested. Continue or quit?
Portfolio rebalancing decisions. Track your reluctance to change.
Identical gambles, different frames. Watch your risk preference flip.
The classic Kahneman mug experiment, digitized.
Rate willingness to pay for low-probability event insurance.
Rate emotional pain across payment methods: cash, card, auto-debit.
Survival vs mortality framing. Same statistics, different reactions.
Input a gamble and see its prospect theory value vs expected value.
10 money choices between now and the future. Plot your personal discount curve.
Wait 30 seconds for double points. How patient are you?
Reveal preference reversals that defy rational discounting.
Write to your future self about a goal. Saved to localStorage.
Input amounts and delays to compute your personal discount rate.
Design a commitment mechanism for a personal goal.
Junk food now vs health later. See your present-bias pattern.
Compound growth vs immediate spending. Visualize the difference.
Rate your tendencies across 8 domains of life.
Compare your patience score to aggregate data from this browser.