We report the protocol relative to the experimental project "Sanctions and international interaction improve cooperation to avert climate change",which connected through the internet pairs of laboratories from Kiel and Bonn (Germany) and Moscow and Tomsk (Russia). The connection was realized through Z-Tree. Each research session comprised 24 participants, who were randomly allocated to 4 groups, whose members were three from one laboratory and three from the other. After receiving instructions and passing a comprehension test, participants interacted over ten rounds. Each participant had a fixed allocation of money in each round, which could have been kept for oneself or contributed to a group account. Contributions decreased the probability that everyone suffered a 75% loss in their personal account at the end of the interaction. A random draw determined whether occurrence the loss event occurred, and individual payoffs were paid privately in cash at the end of the session.

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This is a list of supplementary files associated with this preprint. Click to download.
Instructions (English translation)
Questionnaire (English translation
Powerpoint presentation of instructions summary
Powerpoint presentation of decisions stages and information feedback
Experimenter script (Sanction treatments)
Ztree file 1 (Language setter)
Ztree file 2 (Instructions + Quiz)
Ztree file 3 (Main Experiment)
Ztree file 4 (Questionnaire)
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Posted 04 Aug, 2021
Posted 04 Aug, 2021
We report the protocol relative to the experimental project "Sanctions and international interaction improve cooperation to avert climate change",which connected through the internet pairs of laboratories from Kiel and Bonn (Germany) and Moscow and Tomsk (Russia). The connection was realized through Z-Tree. Each research session comprised 24 participants, who were randomly allocated to 4 groups, whose members were three from one laboratory and three from the other. After receiving instructions and passing a comprehension test, participants interacted over ten rounds. Each participant had a fixed allocation of money in each round, which could have been kept for oneself or contributed to a group account. Contributions decreased the probability that everyone suffered a 75% loss in their personal account at the end of the interaction. A random draw determined whether occurrence the loss event occurred, and individual payoffs were paid privately in cash at the end of the session.

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5
This is a list of supplementary files associated with this preprint. Click to download.
Instructions (English translation)
Questionnaire (English translation
Powerpoint presentation of instructions summary
Powerpoint presentation of decisions stages and information feedback
Experimenter script (Sanction treatments)
Ztree file 1 (Language setter)
Ztree file 2 (Instructions + Quiz)
Ztree file 3 (Main Experiment)
Ztree file 4 (Questionnaire)
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