Exploring Ambiguity Attitudes Across the Parameter Space in a Generalized Ellsberg Three-Color Problem

Last registered on December 24, 2024
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Pre-Trial

Trial Information

General Information

Title
Exploring Ambiguity Attitudes Across the Parameter Space in a Generalized Ellsberg Three-Color Problem
RCT ID
AEARCTR-0014887
Initial registration date
November 25, 2024

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
December 03, 2024, 1:27 PM EST

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Last updated
December 24, 2024, 1:34 PM EST

Last updated is the most recent time when changes to the trial's registration were published.

Locations

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Primary Investigator

Name
Charles Sprenger
Affiliation
Caltech
Contact Primary Investigator

Other Primary Investigator(s)

PI Name
Ted O'Donoghue
PI Affiliation
Cornell
PI Name
Jason Somerville
PI Affiliation
Federal Reserve Bank of New York
PI Name
Kirby Nielsen
PI Affiliation
Caltech
PI Name
Jack Adeney
PI Affiliation
Caltech
PI Name
Christina McGranaghan
PI Affiliation
University of Delaware

Additional Trial Information

Status
In development
Start date
2025-01-06
End date
2025-01-31
Keywords
Behavior
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
The goal of this project is to study ambiguity attitudes across the parameter space by systematically varying parameters of general three-color problems.
External Link(s)

Registration Citation

Citation
Adeney, Jack et al. 2024. "Exploring Ambiguity Attitudes Across the Parameter Space in a Generalized Ellsberg Three-Color Problem." AEA RCT Registry. December 24. https://doi.org/10.1257/rct.14887-1.1
Sponsors & Partners
Experimental Details

Interventions

Intervention(s)
This study will explore ambiguity attitudes across the parameter space by systematically varying parameters of general three-color problems. Participants will be randomly assigned to treatment arms that vary in terms of the number of known vs unkown balls. Participants will also complete corresponding risk tasks in which the number of balls of each color are fully specified.
Intervention Start Date
2025-01-06
Intervention End Date
2025-01-31

Primary Outcomes

Primary Outcomes (end points)
Measures of ambiguity attitudes collected in the form of valuations and choices.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Elicitation of ambiguity attitudes using techniques similar to McGranaghan et al. (2024).
Experimental Design Details
Not available
Randomization Method
By computer in background code.
Randomization Unit
Individual.
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
2,000 individuals
Sample size: planned number of observations
2,000 individuals
Sample size (or number of clusters) by treatment arms
1,200 observations per number of known balls in the urn
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
See included pre-analysis plan for details.
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
Caltech - Committee for the Protection of Human Subjects - Institutional Review Board
IRB Approval Date
2023-09-22
IRB Approval Number
IR23-1340
Analysis Plan

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