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Parties, Opinions and Actions: COVID-19 and Climate Change in Germany
Last registered on April 07, 2021

Pre-Trial

Trial Information
General Information
Title
Parties, Opinions and Actions: COVID-19 and Climate Change in Germany
RCT ID
AEARCTR-0007475
Initial registration date
April 06, 2021
Last updated
April 07, 2021 10:59 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
TUM
Other Primary Investigator(s)
Additional Trial Information
Status
In development
Start date
2021-04-20
End date
2021-06-15
Secondary IDs
Abstract
This study should provide insight into the impact party cues have on the public opinion on the amount of action to be taken to protect the environment and climate during the current COVID-19 crisis. In particular, the effects of cues from one or multiple parties as well as the mechanisms behind these effects are supposed to be analyzed employing two online survey experiments.
External Link(s)
Registration Citation
Citation
Stöhr, Valentina. 2021. "Parties, Opinions and Actions: COVID-19 and Climate Change in Germany." AEA RCT Registry. April 07. https://doi.org/10.1257/rct.7475-1.1.
Experimental Details
Interventions
Intervention(s)
There will be two online survey experiments conducted at the same time. In one of them, the respondents get to read a statement that is either labeled to be from a specific party or not labeled at all and is either in favor of or against more environmental and climate protection during the COVID-19 crisis. In the other survey experiment, the respondents get to read statements from all parties that are either all in favor of, all against or have mixed opinions on more environmental and climate protection during the COVID-19 crisis.
Intervention Start Date
2021-04-20
Intervention End Date
2021-05-04
Primary Outcomes
Primary Outcomes (end points)
There are two main sets of outcomes that measure the importance the respondent attaches to environment and climate protection. The two sets are each composed of two questions concerning either the action taken by the German government or oneself to protect the environment and the climate in terms of the adequacy and urgency of these actions at the moment. Each of these four questions will be used separately to construct four dependent variables. Additionally, a question concerning the donation decision of the respondents is also used to construct another dependent variable.
Primary Outcomes (explanation)
The dependent variables are composed of the differences within the answers to each of these five questions before and after the treatments. Thus, there are five dependent variables.
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
The respondents have to fill out an online survey. For both survey experiments, they first have to answer some general questions on personal data and knowledge and believes about politics and the environment. After that they have to answer the questions on the outcome variables, then get to read the statements described above and answer the questions on the outcome variables again.
Experimental Design Details
Not available
Randomization Method
Randomization is done by a computer, i.e. via the online surveying platform Qualtrics.
Randomization Unit
Randomization is done at individual level.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
3000 respondents in total, with about 2530 partaking in the first and 470 in the second survey experiment.
Sample size: planned number of observations
3000 respondents in total, with about 2530 partaking in the first and 470 in the second survey experiment.
Sample size (or number of clusters) by treatment arms
About 160 per treatment group, with 16 groups ((7 party labels/no label x pro/con statement) in the first and 3 groups (pro consensus, con consensus, overall disagreement) in the second survey experiment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
German Association for Experimental Economic Research e.V.
IRB Approval Date
2021-03-31
IRB Approval Number
RC8ncB7A
Analysis Plan

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