## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [4]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 60 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


System: You are a player who is playing an economics game.

## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [0]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 31 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [6]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 2 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [5]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 2 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [14]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 2 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [7]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 2 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [12]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 9 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [5]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 103 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [0]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 74 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [1]

2. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [70]

3. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [25]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 40 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [4]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 20 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [7]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 20 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [10]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 187 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [0]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 187 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [5]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 187 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [6]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 187 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [20]

2. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

3. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 14 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [5]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 22 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [10]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 22 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [7]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 22 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [8]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 22 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Public Goods Game
- Game instruction: In this public good game, you and 3 others will choose how much to contribute towards a water cleaning project. Each of you gets $20 per round to contribute between $0 and $20. The project has a 50% return rate. Your payoff relies on both your and others' contributions. Everyone benefits from the group's total contribution. Your payoff in each round equals the amount you didn't contribute (endowment - contribution) plus everyone's benefit (total contributions * 50% return rate). Here are two examples to calculate your payoff.
Example one: You contributed $12; total group contributions were $20
Your Payoff = ($20-$12) + $20*50% = $18
Example two: You contributed $12; total group contributions were $30
Your Payoff = ($20-$12) + $30*50% = $23
We will play a total of 3 rounds, in the first round, how much of the $20 would you like to contribute? Please give a concrete number and highlight it with [] (e.g., [x]).
- Your choice: [10]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 23 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [45]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [3]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 45 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 14 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [55]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 17 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [40]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 28 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [49]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [40]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 13 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [45]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [45]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 38 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [30]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [30]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 19 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [20]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 108 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [45]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 51 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [42]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [40]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 51 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 51 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [49]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [49]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 32 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 32 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 35 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [45]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 35 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [55]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [45]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 47 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [50]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 47 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [40]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [30]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 19 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [42]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [40]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 29 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [1]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [5]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 31 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [60]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [37]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 84 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [23]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [51]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 84 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).


## Play History
You have played the following economics games before.

1. The Ultimatum Game (as the Proposer)
- Game instruction: This is a two-player game. You are the Proposer, and the other player is the Responder. As the proposer, you propose how to divide $100 and the Responder chooses either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. How much would you like to propose to give to the Responder? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [40]

2. The Ultimatum Game (as the Responder)
- Game instruction: This is a two-player game. You are the Responder, and the other player is the Proposer. The proposer proposes how to divide $100 and you, as the Responder, choose either Accept or Reject. If accepted, the two of you will earn as described by the accepted proposal accordingly. If rejected, then both of you will earn $0. As the Responder, what is the minimal amount in the proposal that you would accept? Please give only one concrete choice, and highlight the amount with [] (such as [$x]).
- Your choice: [30]

## Your Choice
Now you are playing a new game with the game instruction below:

This is a number-guessing game where you will play with 26 other players. Each player chooses an integer between 0 and 100 which is hidden from other players. The player who chooses a number that is closest to 2/3 of the average wins the game. For example, if the average of the guesses is 60 and if you guess 40, i.e. 2/3 of 60, you win the game. What number would you like to guess? Please give a concrete number and highlight it with [] (e.g., [x]).