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Field
Experimental Design (Public)
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Before
Baseline (no information treatment)
• Pie size of 20
• Player A (PA) can offer 9 or 5 to PB and keep the remainder
• Player B (PB) can reject or accept without knowing the offer.
Rejection payoffs: (12 for PA, 0 for PB)
Acceptance payoffs: as per offer by PA
• If PA offered 5 and PB accepted, Player C (PC) is given a chance to decide the final payoffs for PA and PB. PC chooses one of the following three:
(15, 5); (11, 6); (9, 6)
PC is a spectator and their decision does not affect their own payoff.
• After these decisions, each player is given the same set of questions on Beliefs, Normative Expectations and demographic questionnaire. The Beliefs and Normative Expectations questions are incentivised. The latter is incentivised using the Krupka and Weber (2013) method.
• Normative Expectation questions related to consent will be used as a secondary outcome variable.
Information treatment
The only difference between the baseline and information treatment is that prior to deciding whether to accept or reject the offer, PB can choose to check or not check the offer by PA. To check, PB has to complete a decoding task that takes on average, 2-3 minutes of their time. If the task is completed, PB finds out what PA offered prior to deciding to reject or accept the offer. Otherwise, PB chooses as per the baseline treatment.
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After
Baseline (no information treatment)
• Pie size of 20
• Player A (PA) can offer 9 or 5 to PB and keep the remainder
• Player B (PB) can reject or accept without knowing the offer.
Rejection payoffs: (12 for PA, 0 for PB)
Acceptance payoffs: as per offer by PA
• If PA offered 5 and PB accepted, Player C (PC) is given a chance to decide the final payoffs for PA and PB. PC chooses one of the following three:
(15, 5); (11, 6); (9, 6)
PC is a spectator and their decision does not affect their own payoff.
• After these decisions, each player is given the same set of questions on Beliefs, Normative Expectations and demographic questionnaire. The Beliefs and Normative Expectations questions are incentivised. The latter is incentivised using the Krupka and Weber (2013) method.
• Normative Expectation questions related to consent will be used as a secondary outcome variable.
Information treatment
The only difference between the baseline and information treatment is that prior to deciding whether to accept or reject the offer, PB can choose to check or not check the offer by PA. To check, PB has to complete a decoding task that takes on average, 2-3 minutes of their time. If the task is completed, PB finds out what PA offered prior to deciding to reject or accept the offer. Otherwise, PB chooses as per the baseline treatment.
*Please refer to 'Experimental Design (Hidden)' for planned additions in May 2024
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