x

We are happy to announce that all trial registrations will now be issued DOIs (digital object identifiers). For more information, see here.
Perceptions of relative positions in Denmark
Last registered on February 27, 2019

Pre-Trial

Trial Information
General Information
Title
Perceptions of relative positions in Denmark
RCT ID
AEARCTR-0003923
Initial registration date
February 18, 2019
Last updated
February 27, 2019 8:55 PM EST
Location(s)

This section is unavailable to the public. Use the button below to request access to this information.

Request Information
Primary Investigator
Affiliation
Harvard University
Other Primary Investigator(s)
PI Affiliation
University of Copenhagen
PI Affiliation
University of Copenhagen
Additional Trial Information
Status
In development
Start date
2019-03-04
End date
2020-03-15
Secondary IDs
Abstract
We study what respondents in Denmark know about their relative income positions in various reference groups. References groups are, among others, education groups, cohorts, sectors, or municipalities. Thanks to the match to administrative data from Statistics Denmark, we can check whether respondents know their relative positions accurately. We randomly provide a subset of respondents with information about their position and see how this changes their views on various policies.
External Link(s)
Registration Citation
Citation
Hvidberg, Kristoffer, Claus Kreiner and Stefanie Stantcheva. 2019. "Perceptions of relative positions in Denmark." AEA RCT Registry. February 27. https://doi.org/10.1257/rct.3923-2.0.
Former Citation
Hvidberg, Kristoffer, Claus Kreiner and Stefanie Stantcheva. 2019. "Perceptions of relative positions in Denmark." AEA RCT Registry. February 27. https://www.socialscienceregistry.org/trials/3923/history/42184.
Experimental Details
Interventions
Intervention(s)
We administer an online survey to respondents in Denmark, eliciting their perceptions about their relative positions in the income distributions of different reference groups. We show respondents information about their actual position in these income distributions and see whether that information shapes their views on different policies.
Intervention Start Date
2019-03-04
Intervention End Date
2019-06-15
Primary Outcomes
Primary Outcomes (end points)
The key outcome variables of the experimental part are all the views on fairness and the views on all the policies. The key outcomes of the descriptive part are the measures of misperceptions of respondents' positions in the income distributions of the reference groups.
Primary Outcomes (explanation)
We will use a lot of the policy questions as such, but we will also construct redistribution support indices that summarize the general pattern of redistribution support, based on standardized z-scores of the responses to all policy questions. We will do the same for the variables asking about the perceived fairness of the system. Finally, we will also construct measures of the misperceptions of respondents by subtracting their true position inside the different reference groups from their perceived relative positions.
Secondary Outcomes
Secondary Outcomes (end points)
We are interested in heterogeneity by the background characteristics of respondents and will thus look at outcomes by sub-groups as defined by income, age, gender, political affiliation.
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We randomize at the respondent level, with some respondents shown their actual positions inside the large reference groups, while others are not shown any information.
Experimental Design Details
Not available
Randomization Method
The randomization is done by the survey software (Qualtrics).
Randomization Unit
The randomization unit is at the individual respondent level.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
10,000 individuals (We will send out invitations to 50,000 respondents hoping for a 20% response rate. If we do not get enough respondents, we have up to 100,000 possible respondents to send invitations to).
Sample size: planned number of observations
10,000 individuals
Sample size (or number of clusters) by treatment arms
5,000 treatment individuals who see the informational treatment and 5,000 individuals who do not see the treatment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

There are documents in this trial unavailable to the public. Use the button below to request access to this information.

Request Information
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
University of Copenhagen IRB
IRB Approval Date
2018-06-12
IRB Approval Number
514-0018/2018-2000,
Analysis Plan

There are documents in this trial unavailable to the public. Use the button below to request access to this information.

Request Information