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The Norwegian Type
Last registered on July 10, 2019

Pre-Trial

Trial Information
General Information
Title
The Norwegian Type
RCT ID
AEARCTR-0004390
Initial registration date
June 27, 2019
Last updated
July 10, 2019 1:24 PM EDT
Location(s)
Region
Region
Primary Investigator
Affiliation
Department of Economics, UoB
Other Primary Investigator(s)
PI Affiliation
Norwegian School of Economics
PI Affiliation
Norwegian School of Economics
Additional Trial Information
Status
In development
Start date
2019-06-27
End date
2020-01-31
Secondary IDs
Abstract
Keeping incentives fixed and assuming stability of preferences over time –are cooperative preferences
sensitive to context? In particular, do subjects change their behavior when going from a context in
which a new public good has to be created to a context in which one has to maintain an existing
one? We elicit the cooperative preferences of a representative sample of the Norwegian population
at two points in time, and examine whether their preferences are stable between a provision and
maintenance context. Second, in a framed public goods experiment, we randomize subjects into
either an information treatment intended to affect beliefs about others’ behavior or a control group
with no information. We seek to examine whether the elicited types and their degree of stability lead
to heterogeneous effects of the information treatment.
External Link(s)
Registration Citation
Citation
Serdarevic, Nina, Oda Sund and Oda Sund. 2019. "The Norwegian Type." AEA RCT Registry. July 10. https://doi.org/10.1257/rct.4390-1.0.
Former Citation
Serdarevic, Nina et al. 2019. "The Norwegian Type." AEA RCT Registry. July 10. http://www.socialscienceregistry.org/trials/4390/history/49716.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2019-06-28
Intervention End Date
2019-12-31
Primary Outcomes
Primary Outcomes (end points)
Beliefs, Contributions to the Rainforest Foundation, Cooperative types, Public goods size, Attitudes
Primary Outcomes (explanation)
Stable cooperator: Classified as cooperators in both situations.Stable reciprocator: Classified as reciprocator in both situations.Stable free-rider: Classified as free-rider in both situations.Unstable type: An individual who has a context specific cooperative type. Cooperator, reciprocator and free rider will be constructed using a pre-specified classification procedure.
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We elicit the cooperative preferences of a representative sample of the Norwegian population
at two points in time, and examine whether their preferences are stable between a provision and
maintenance context. Second, in a framed public goods experiment, we randomize subjects into
either an information treatment intended to affect beliefs about others’ behavior or a control group
with no information. We seek to examine whether the elicited types and their degree of stability lead
to heterogeneous effects of the information treatment.
Experimental Design Details
Provision: To elicit cooperative types, we follow the design outlined by Fischbacher et al. (2001) in which subjects submit a contribution schedule as a function of another person’s hypothetical contributions. Subjects are first asked to choose how much they want to contribute unconditional of the choices of another person. Second, using the strategy method, subjects are asked to how much they want to contribute conditional on 11 hypothetical contribution choices of another person. Maintenance: Also, in a one-shot two-person public goods game, we examine subjects’ willingness to refrain from exploiting an existing public good.We use the same classification procedure as in the Provision game.
Randomization Method
Randomization done by fielding company.
Randomization Unit
individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
Approx 2000
Sample size: planned number of observations
Approx 2000
Sample size (or number of clusters) by treatment arms
Approx 2000
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

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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