Design of a Worldwide Public Good Game Experiment

Benedikt Herrmann

Christian Thoni

Simon Gachter

Science (Journal)

In a public goods experiment, four participants are each given $20 and can contribute any amount to a group project. For every dollar contributed, each of the four members receives a $0.40 return. After contributions are revealed, participants have the option to pay a small fee to reduce another player's earnings. Player 1 contributes $18, Player 2 contributes $15, Player 3 contributes $16, and Player 4 contributes $1. After seeing these results, Player 4 pays a fee to reduce Player 1's earnings. Based on experimental findings from a large cross-societal study on this topic, what is the most accurate classification of Player 4's action?

Critique of a Cross-Societal Public Goods Experiment

Consider an economic system where the state owns all major means of production, such as factories and machinery. The state leases this equipment to private individuals who then hire workers in a competitive labor market and sell the resulting products in a competitive goods market, aiming to make a personal profit. Based on the core institutional definition of an economic system centered on private property, markets, and firms, why would this system not be classified as capitalist?

Interpreting Punishment Patterns in Public Goods Games

Predicting Punishment Behavior in a Public Goods Game

A large-scale economic experiment was conducted in cities around the world. In the experiment, groups of four anonymous individuals played a game for ten rounds. In each round, players received an endowment and could contribute to a group project. After contributions were revealed, players had the option to pay a fee to reduce the earnings of other players. What was the primary research objective of comparing the results from the different cities?

In a large-scale public goods experiment conducted across many different societies, it was found that giving participants the ability to financially penalize others after observing their contributions consistently increased the overall level of cooperation in all societies studied.

In a public goods experiment, participants contribute to a group project and then have the option to pay to reduce the earnings of other players. Match each type of punishment behavior with the description of the action that best defines it.

In a large-scale economic experiment, groups of four anonymous individuals played a game for ten rounds. In each round, players received an endowment and could contribute to a group project that benefited all members. After contributions were revealed, players had the option to pay a fee to reduce the earnings of other players. The experiment was run in two different cities, City A and City B, with the following results:

• In City A, punishment was almost exclusively used against individuals who contributed very little to the group project. Average contributions in this city increased significantly over the ten rounds.
• In City B, punishment was frequently used not only against low contributors but also against individuals who contributed much more than the group average. Average contributions in this city did not increase and sometimes fell over the ten rounds.

Based on these experimental findings, what is the most likely inference about the general social norms in these two cities?

Significance of Cross-Societal Punishment Findings

Interpreting Punishment Patterns in Public Goods Games

Science (Journal)

An olive oil production facility uses a robotic system where each unit requires one worker and 400 kWh of energy to produce 100 liters of oil per day. The facility currently operates 5 units, using 5 workers and 2,000 kWh of energy. If the facility manager hires a sixth worker but keeps the energy supply at 2,000 kWh, the daily olive oil production will increase.

An experiment compares two groups playing an economic game where one person (the Proposer) offers a split of a sum of money to another person (the Responder), who can either accept or reject it. If the Responder rejects, neither person gets any money. The results show that Responders from a small-scale, cooperative farming society reject offers of 20% of the total sum far more frequently than Responders from a large, anonymous urban society. What does this outcome most strongly suggest?

Predicting Behavior in Economic Games

Predicting Behavior in Economic Games

In an economic experiment, a 'Proposer' offers to split a sum of money with a 'Responder'. The Responder can accept, and they both get the proposed shares, or reject, and neither gets anything. Researchers find that Responders from Society X, a small-scale community reliant on mutual cooperation for survival, are significantly more likely to reject low offers (e.g., 20% of the total) than Responders from Society Y, a large, anonymous, market-based society. What is the most plausible explanation for this difference in behavior?

An economic experiment compares two groups. In Group A, from a small-scale society where daily life depends on close cooperation, individuals playing a bargaining game frequently reject offers they perceive as unfair, even if it means neither person gets any money. In Group B, from a large, anonymous society, individuals are much more likely to accept any offer, no matter how small. What is the most significant conclusion that can be drawn from this difference in behavior?

Evaluating Generalizations from Economic Experiments

Critiquing Experimental Economic Research

In an economic experiment, individuals from a small-scale, cooperative society (Group A) are observed to reject low monetary offers in a one-shot bargaining game more frequently than individuals from a large, anonymous, market-based society (Group B). A critic suggests this difference is not due to varying social norms of fairness, but simply because Group A is less capable of rational, self-interested calculation. Which of the following potential follow-up findings would most strongly refute the critic's explanation?

A research team conducts an economic experiment where one participant proposes how to split a sum of money and another participant can accept or reject the offer. To investigate how social environments shape economic behavior, they compare the results from two very different groups: members of a small-scale, cooperative agricultural community and students from a large, anonymous urban university. What is the primary analytical advantage of comparing these two specific groups in this type of study?