For DEBUGING
Condition CONDITION PLACEHOLDER
Round round PLACEHOLDER
Players in the Group GROUP PLACEHOLDER
Group Name GROUPS PLACEHOLDER
Please provide the following information:

Name:
Please provide your name

ID number:
Please provide your id

E-mail address:
Please provide a valid email

Phone Number:
Please provide your phone number

Age:
Please provide your age
Gender:
Please select a gender
Male
Female


Welcome to our experiment.

In this experiment you are a part of a group of players. In every game you are given 10 tokens. You will be asked to decide if you contribute your 10 tokens to the group or keep the 10 tokens to yourself. If 4 players or more choose to contribute then the group succeeds, and every player of the group gets a reward of 20 tokens. If less than 4 players choose to contribute then the group fails, and the contributed tokens are lost.

You and the rest of the players do not know the size of the group. Before deciding whether to contribute or to keep the tokens, you may declare your presence to the group. Players do not know the number of players in the group, but they are informed how many players chose to declare their presence.

The declaration of presence has no cost.

The declaration of presence costs is PLACEHOLDER tokens.

The game will be played for 30 rounds. The players and the size of the group change from round to round. The size of the group will be announced in the beginning of each round.


Please answer the following questions to make sure you understand the instructions. You may look at the instructions for help.

How many round are there in a session?

10 rounds
20 rounds
30 rounds
40 rounds

How many tokens does a player get at the beginning of every round?

10 tokens
20 tokens
30 tokens
40 tokens

How many tokens can a players contribute in every round?

Any number of tokens from 0 to 10
0 tokens OR 10 tokens
0 tokens OR 5 tokens OR 10 tokens
0 tokens OR 10 tokens OR 20 tokens

If there are 6 players who contribute, what is the result of the round?

The group fails and the contributed tokens are lost
The group succeeds and only the players that contributed get a reward of 20 tokens each
The group succeeds and all of the players get a reward of 20 tokens each
The group fails and all of the players get a reward of 10 tokens

What information about the declaration is presented?

Only players who declared their presence see the total number of players who declared.
All the players see the total number of players who declared, but not their identities.
No one knows how many players declared.
All the players know how many players declared and their identities.

Your responses to the following are incorrect: . Please try again.
Your responses are correct. The study will start when other participants have finished. Please wait. Do not refresh the page or hit the back button.

Round number: PLACEHOLDER - i/R/PLACEHOLDER - i/R

Number of players in the group: PLACEHOLDER Nj

Would you like to declare your presence (with no cost)?

Would you like to declare your presence (in a cost of 2 tokens)?


You PLACEHOLDER FOR DECLARE CHOICE your presence.

Please wait.... (Do not refresh the page or hit the back button)

Round number: PLACEHOLDER - i/R/PLACEHOLDER - i/R

You have received PLACEHOLDER - i/R tokens for this round

Number of players in the group: PLACEHOLDER Nj
Number of players in the group is at least: PLACEHOLDER Nj

Number of players that declared their presence: PLACEHOLDER - ~N

Please click your choice:


You chose PLACEHOLDER FOR COOP CHOICE

Please wait... Do not refresh the page or hit the back button.

Round number: PLACEHOLDER - i/R/PLACEHOLDER - i/R

You have not made a choice in the past two rounds. If you do not enter a choice in the next round, you will be removed from the study

Number of players in the group: PLACEHOLDER Nj
Number of players in the group is at least: PLACEHOLDER Nj

Number of players that declared their presence: PLACEHOLDER FOR DECLARE CHOICE

You PLACEHOLDER FOR DECLARE CHOICE your presence

You chose "PLACEHOLDER FOR COOP CHOICE"

PLACEHOLDER FOR NUM COOPERATED player(s) chose to contribute their tokens

The group PLACEHOLDER FOR RESULT

Your total reward so far is PLACEHOLDER FOR TOTAL
Round number: PLACEHOLDER - i/R/PLACEHOLDER - i/R

You were randomly selected to sit out this round. Please wait while participants finish and you will participate in the next round. Do not refresh the page or hit the back button.

The session is over. Your score is 60.0 points. Thank you for your participation.

Not enough participants in the study to continue. Please exit and contact the instructor.

The list is full, try another time-window.
Synchronizing player data... Do not refresh the page or hit the back button.
We encountered a problem and removed you from the study. Our apologies for the inconvenience.