x

We are happy to announce that all trial registrations will now be issued DOIs (digital object identifiers). For more information, see here.
The Role of Memory in Beliefs Formation
Last registered on August 09, 2019

Pre-Trial

Trial Information
General Information
Title
The Role of Memory in Beliefs Formation
RCT ID
AEARCTR-0004526
Initial registration date
August 09, 2019
Last updated
August 09, 2019 9:48 AM EDT
Location(s)

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

Request Information
Primary Investigator
Affiliation
MIT
Other Primary Investigator(s)
PI Affiliation
Microsoft Research and NBER
PI Affiliation
University of Michigan
Additional Trial Information
Status
In development
Start date
2019-08-09
End date
2020-08-08
Secondary IDs
Abstract
This experiment studies how people memory limitations affect the process of beliefs formations.
External Link(s)
Registration Citation
Citation
Mobius, Markus, Tanya Rosenblat and Pierre-Luc Vautrey. 2019. "The Role of Memory in Beliefs Formation." AEA RCT Registry. August 09. https://doi.org/10.1257/rct.4526-1.0.
Former Citation
Mobius, Markus, Tanya Rosenblat and Pierre-Luc Vautrey. 2019. "The Role of Memory in Beliefs Formation." AEA RCT Registry. August 09. https://www.socialscienceregistry.org/trials/4526/history/51499.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2019-08-09
Intervention End Date
2020-08-08
Primary Outcomes
Primary Outcomes (end points)
Double counting. Effect of time decay (through distraction) on double counting.
Primary Outcomes (explanation)
The outcomes are constructed using logit belief updates regressions which are described formally in the PDF attached.
Secondary Outcomes
Secondary Outcomes (end points)
Can double counting be explained only by limited attention and imperfect recognition?
Secondary Outcomes (explanation)
This is based on theoretical bounds on double counting that we derive in the attached PDF.
Experimental Design
Experimental Design
The experiment consists in having participant read fictional news about a fictional company and reporting their beliefs about the state of the world, which is an attribute of the company influencing the production of news. Some news will organically appear repeatedly while others will not and we focus on understand how memory and attention limitations shape over-reaction to repeated news.

Experimental Design Details
Not available
Randomization Method
Randomization done by a computer.
Randomization Unit
Individual.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
700 individuals
Sample size: planned number of observations
700 invidivuals
Sample size (or number of clusters) by treatment arms
350 in Decay-Inducing treatment, 350 in No Decay treatment
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
We used a bootstrap approach to power calculation using pilot data. See the attached PDF.
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
MIT Committee on the Use of Humans as Experimental Subjects (COUHES)
IRB Approval Date
2019-07-25
IRB Approval Number
E-1562
Analysis Plan

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

Request Information