This is a one-period public goods game with 3 players.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

a.k.a. Keynesian beauty contest. Players all guess a number; whoever guesses closest to 2/3 of the average wins. See https://en.wikipedia.org/wiki/Guess_2/3_of_the_average

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

A quiz app that reads its questions from a spreadsheet (see quiz.csv in this directory). There is 1 question per page; the number of pages in the game is determined by the number of questions in the CSV. See the comment below about how to randomize the order of pages.

This is a standard 2-player trust game where the amount sent by player 1 gets tripled. The trust game was first proposed by Berg, Dickhaut, and McCabe (1995) .

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

This is a one-shot "Prisoner's Dilemma". Two players are asked separately whether they want to cooperate or defect. Their choices directly determine the payoffs.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

Ultimatum game with two treatments: direct response and strategy method. In the former, one player makes an offer and the other either accepts or rejects. It comes in two flavors, with and without hypothetical questions about the second player's response to offers other than the one that is made. In the latter treatment, the second player is given a list of all possible offers, and is asked which ones to accept or reject.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

Ultimatum game with two treatments: direct response and strategy method. In the former, one player makes an offer and the other either accepts or rejects. It comes in two flavors, with and without hypothetical questions about the second player's response to offers other than the one that is made. In the latter treatment, the second player is given a list of all possible offers, and is asked which ones to accept or reject.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

Ultimatum game with two treatments: direct response and strategy method. In the former, one player makes an offer and the other either accepts or rejects. It comes in two flavors, with and without hypothetical questions about the second player's response to offers other than the one that is made. In the latter treatment, the second player is given a list of all possible offers, and is asked which ones to accept or reject.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

In this Vickrey auction, 3 players bid for an object with private values. Each player can only submit one bid. See: Vickrey, William. "Counterspeculation, auctions, and competitive ' sealed tenders." The Journal of finance 16.1 (1961): 8-37.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

Each player decides if to free ride or to volunteer from which all will benefit. See: Diekmann, A. (1985). Volunteer's dilemma. Journal of Conflict Resolution, 605-610.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

In Cournot competition, firms simultaneously decide the units of products to manufacture. The unit selling price depends on the total units produced. In this implementation, there are 2 firms competing for 1 period.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

The principal offers a contract to the agent, who can decide if to reject or accept. The agent then chooses an effort level. The implementation is based on Gaechter and Koenigstein (2006) .

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

One player decides how to divide a certain amount between himself and the other player. See: Kahneman, Daniel, Jack L. Knetsch, and Richard H. Thaler. "Fairness and the assumptions of economics." Journal of business (1986): S285-S300.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

A demo of how rounds work in oTree, in the context of 'matching pennies'

Kaushik Basu's famous traveler's dilemma ( AER 1994 ). It is a 2-player game. The game is framed as a traveler's dilemma and intended for classroom/teaching use.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

This bargaining game involves 2 players. Each demands for a portion of some available amount. If the sum of demands is no larger than the available amount, both players get demanded portions. Otherwise, both get nothing.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

In a common value auction game, players simultaneously bid on the item being auctioned.
Prior to bidding, they are given an estimate of the actual value of the item. This actual value is revealed after the bidding.
Bids are private. The player with the highest bid wins the auction, but payoff depends on the bid amount and the actual value.

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

2 firms complete in a market by setting prices for homogenous goods. See "Kruse, J. B., Rassenti, S., Reynolds, S. S., & Smith, V. L. (1994). Bertrand-Edgeworth competition in experimental markets. Econometrica: Journal of the Econometric Society, 343-371."

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

This is a task that requires real effort from participants. Subjects are shown two images of incomprehensible text. Subjects are required to transcribe (copy) the text into a text entry field. The quality of a subject's transcription is measured by the Levenshtein distance.

In a lemon market of Akerlof (1970) , 2 buyers and 1 seller interact for 3 periods. The implementation is based on Holt (1999) .

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

This application provides a webpage instructing participants how to get paid. Examples are given for the lab and Amazon Mechanical Turk (AMT).

Simple trust game