1. Introduction -- 1.1. Economics as an experimental discipline -- 1.2. The engine of scientific progress -- 1.3. Data sources -- 1.4. Purposes of experiments -- 2. Principles of economics experiments -- 2.1. Realism and models -- 2.2. Controlled economic environments -- 2.3. Induced-value theory -- 2.4. Parallelism -- 2.5. Practical implications -- 2.6. Application: The Hayek hypothesis -- 3. Experimental design -- 3.1. Direct experimental control: Constants and treatments -- 3.2. Indirect control: Randomization -- 3.3. The within-subjects design as an example of blocking and randomization -- 3.4. Other efficient designs -- 3.5. Practical advice -- 3.6. Application: New market institutions -- 4. Human Subjects -- 4.1. Who should your subjects be? -- 4.2. Subjects’ attitudes toward risk -- 4.3. How many subjects? -- 4.4. Trading commissions and rewards -- 4.5. Instructions -- 4.6. Recruitment and maintaining subject history -- 4.7. Human subject committees and ethics -- 4.8. Application: Bargaining experiments -- 5. Laboratory facilities -- 5.1. Choosing between manual and computer modes -- 5.2. Manual laboratory facilities -- 5.3. Computerized laboratory facilities -- 5.4. Random number generation -- 5.5. Application: Experiments with monetary overlapping generations economies -- 6. Conducting an experiment -- 6.1. Lab log -- 6.2. Pilot experiments -- 6.3. Lab setup -- 6.4. Registration -- 6.5. Conductors -- 6.6. Monitors -- 6.7. Instruction -- 6.8. Handling queries from subjects -- 6.9. Dry-run periods -- 6.10. Manual conduct of markets -- 6.11. Recording the data -- 6.12. Termination -- 6.13. Laboratory termination of infinite-period economies -- 6.14. Debriefing -- 6.15. Payment -- 6.16. Bankruptcy -- 6.17. Bailout plan -- 6.18. Application: Committee decisions under majority rule -- 7. Data analysis -- 7.1. Graphs and summary statistics -- 7.2. Statistical inference: Preliminaries -- 7.3. Reference distributions and hypothesis tests -- 7.4. Practical advice -- 7.5. Application: First-price auctions -- 8. Reporting your results -- 8.1. Coverage -- 8.2. Organization -- 8.3. Prose, tables, and figures -- 8.4. Documentation and replicability -- 8.5. Project management -- 8.6. Application: Asset-market experiments -- 9. The emergence of experimental economics -- 9.1. Economics as an experimental science -- 9.2. Games and decisions up to 1952 -- 9.3. Two pioneers -- 9.4. Experimental economics in Germany -- 9.5. Early classroom markets -- 9.6. Building theoretical foundations, 1960-76 -- 9.7. Joining the economics mainstream -- 9.8. Divergence from experimental psychology -- 9.9. Application: Laboratory games -- Appendixes: Supplemental materials -- I. Readings in experimental economics -- II. Instructions and procedures -- III. Forms -- IV. Econometrica guidelines -- V. List of experimental economics laboratories.