Unawareness and risk: an online experiment
Last registered on May 23, 2019

Pre-Trial

Trial Information
General Information
Title
Unawareness and risk: an online experiment
RCT ID
AEARCTR-0004145
Initial registration date
April 30, 2019
Last updated
May 23, 2019 7:21 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
University of Pittsburgh
Other Primary Investigator(s)
PI Affiliation
Royal Holloway University London
Additional Trial Information
Status
Completed
Start date
2019-05-02
End date
2019-05-07
Secondary IDs
Abstract
This is an online study on decision-making in economic relevant contexts. The purpose of this registration is to make available to subjects information related to the randomization procedures used during the experiment. Such information will be visible only after the collection of data. Specifically, it will be visible to everyone on Wednesday, May 8th, 2019.
External Link(s)
Registration Citation
Citation
Augusto de Araujo, Felipe and Evan Piermont. 2019. "Unawareness and risk: an online experiment." AEA RCT Registry. May 23. https://www.socialscienceregistry.org/trials/4145/history/47021
Experimental Details
Interventions
Intervention(s)
This is an online experiment using Amazon Mechanical Turk and investigating decision-making in economic relevant contexts.
Intervention Start Date
2019-05-02
Intervention End Date
2019-05-07
Primary Outcomes
Primary Outcomes (end points)
The amount that participants decide to bet in a risky lottery in a modified investment game (Gneezy and Potters, QJE, 1997).
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
As described in the abstract, this is a registration about an online experiment on decision-making in economic relevant contexts. The goal of this pre-registration is to make relevant information available to interested participants after all data has been collected.
Experimental Design Details
Randomization Method
Public lottery. Specifically, we used the Pick 2 game of the Pennsylvania Lottery. For more details refer to the section "Intervention", which will be made available after all data has been collected.
Randomization Unit
Individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
Based on previous literature, we are aiming to collect 90-110 responses in each of 6 treatment arms.
Sample size: planned number of observations
650 individuals, recruited via Amazon Mechanical Turk.
Sample size (or number of clusters) by treatment arms
90-110 subjects per treatment arm.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
University of Pittsburgh Institutional Review Board
IRB Approval Date
2018-08-23
IRB Approval Number
PRO18060489
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 and Papers
Preliminary Reports
Relevant Papers