Public Project
Your private value measures how much a shared project is worth to you. The mechanism decides whether it is built.
Incentive Compatibility Lab
Allocation—
Payment0
Utility0
Manipulation gain0
How this teaches game theory
Complete scenario, mode, and level guide
A mechanism is incentive compatible when agents do not gain by misreporting private information.
Service Priority
Your report affects access to a scarce high-priority service and the payment charged.
Resource Allocation
Your report competes with a benchmark agent for one indivisible resource.
Modes
Human Reports Value
You choose the report and directly test whether exaggeration or understatement helps.
Human + Truthfulness Advisor
The interface compares your report with truthful reporting and highlights profitable deviations.
Computer Strategy Search
The computer scans many possible reports and finds the report with highest utility.
Levels
Level 1 — Simple Threshold
Allocation depends mainly on whether the report crosses a threshold. Manipulation is easy to see.
Level 2 — Strategic Payment
Payments depend on the critical threshold, illustrating why payment rules matter for truthfulness.
Level 3 — Competing Agent
A rival value creates a more realistic allocation problem and exposes dominant-strategy reasoning.
Key distinction: truthfulness concerns utility from reporting honestly, not whether the mechanism always produces the outcome you personally prefer.