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Fields Changed

Registration

Field Before After
Trial Status in_development completed
Trial End Date May 31, 2021 October 12, 2021
Last Published October 07, 2019 09:33 AM January 02, 2022 01:31 PM
Intervention End Date May 31, 2021 October 12, 2021
Experimental Design (Public) We will run short sessions (approximately 45 minutes) in which groups play three different treatments. Group sizes will be around 10-15 players. After running short sessions, we also plan to run longer versions of the experiment. In these longer versions (between 1 day and 1 week), a larger number of players (60-100) will play a single treatment. -Sessions run in NYU CESS, with each subject playing all treatments randomly ordered. -Sessions run on Amazon Mechanical Turk with groups of 10 workers, each only playing one session.
Randomization Method Randomization done by computer. Some randomization will be done pre-session. Randomization done by computer.
Randomization Unit Across sessions: randomize order of treatments Within sessions: random matching of players Within game: random order of parameter change Session level - each group will be randomly assigned one treatment.
Planned Number of Clusters 12 (short) sessions in NYU CESS 3 long sessions 12 sessions in NYU CESS (each session corresponding to three treatments) ~40 Sessions on MTurk (each session corresponding to 2, 3 or 4 treatments)
Planned Number of Observations 200-700 players ~300 individuals in NYU CESS ~1250 individuals on Amazon Mechanical Turk
Sample size (or number of clusters) by treatment arms Each player in the short session plays all 3 treatments, randomly ordered. 3 clusters for large group experiments. Each player in the NYU session plays all 3 treatments, randomly ordered. On MTurk, each player plays just 1 treatment
Keyword(s) Governance Governance
Building on Existing Work No
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Irbs

Field Before After
IRB Name Princeton University Institutional Review Board
IRB Approval Date August 11, 2021
IRB Approval Number IRB 13998
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Other Primary Investigators

Field Before After
Affiliation NYU Princeton
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