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The Effect of Relative Income on Conformism
Last registered on March 15, 2021

Pre-Trial

Trial Information
General Information
Title
The Effect of Relative Income on Conformism
RCT ID
AEARCTR-0007310
Initial registration date
March 12, 2021
Last updated
March 15, 2021 10:50 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
Paderborn University
Other Primary Investigator(s)
PI Affiliation
Paderborn University
Additional Trial Information
Status
In development
Start date
2021-03-29
End date
2021-03-31
Secondary IDs
Abstract
In this study, we test how relative income effects affect conformism behavior. We conduct an experiment, in which we vary relative income in form of an endowment and use a repeated voting structure between 2 policies to observe conformism behavior in groups. The repeated voting structure allows us to disentangle conformism behavior caused by different motives. The different high incomes could influence the uncertainty about the ability to make a good decision and thus affects the chance for social learning. Another treatment effect could be that the income effects induce general reciprocity and affect conformism behavior over the channel of social responsibility. Knowing when people do or do not conform, can help to implement measures to support the implementation of the majority┬┤s vote.
External Link(s)
Registration Citation
Citation
Bopp, Fabian and Larissa Wienke. 2021. "The Effect of Relative Income on Conformism." AEA RCT Registry. March 15. https://doi.org/10.1257/rct.7310-1.0.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2021-03-29
Intervention End Date
2021-03-31
Primary Outcomes
Primary Outcomes (end points)
Share of conformism behavior within the minority subjects
Primary Outcomes (explanation)
We implement repeated voting between two options in groups of three. As a result, we may observe how a subject in the minority behaves and whether she conforms or not.
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
In this study, we create a relative income effect. Subjects form a group of three members. Using a repeat decision between two options with different decision rules we first elicit the unbiased preferences, then create a situation in which we can observe minority behavior, and then by changing the decision rule between the repeated choices observe whether and why subjects conform.
Experimental Design Details
Randomization Method
randomization is done by a computer
Randomization Unit
individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
102 subjects
Sample size: planned number of observations
102 subjects* 5 choice problems=510 observations (We are only interested in minority observations) 510*0.25 (estimate of minority observations per choice problem &subject)= estimated 126 (interesting) observations. We use groups of 3 subjects but do not force them into a minority. Thus it can happen, that all 3 choose the same option and no group member ends up in the minority. This explains why estimated share is smaller them 0.33.
Sample size (or number of clusters) by treatment arms
estimated 63 observation per treated type
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
IRB Approval Date
IRB Approval Number
Analysis Plan

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Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)
REPORTS & OTHER MATERIALS