Narratives and Valuations
Last registered on April 27, 2021

Pre-Trial

Trial Information
General Information
Title
Narratives and Valuations
RCT ID
AEARCTR-0007409
Initial registration date
March 30, 2021
Last updated
April 27, 2021 1:42 PM EDT
Location(s)
Region
Primary Investigator
Affiliation
University of Pittsburgh
Other Primary Investigator(s)
PI Affiliation
CMU
Additional Trial Information
Status
In development
Start date
2021-04-28
End date
2021-05-15
Secondary IDs
Abstract
We manipulate the likelihood of narrative thinking in a randomized online experiment to estimate the effect of narrative (compared to analytical) thinking on valuations.
External Link(s)
Registration Citation
Citation
Loewenstein, George and Dor Morag. 2021. "Narratives and Valuations." AEA RCT Registry. April 27. https://doi.org/10.1257/rct.7409-1.1.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2021-04-28
Intervention End Date
2021-05-15
Primary Outcomes
Primary Outcomes (end points)
Willingness to Accept (WTA) in USD, and unwillingness to sell (refusing to sell at any offered price)
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Acceptance to trade personal item for the same exact item but new, how much paid for the hat, ownership length, story career-related, list hinted to story
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
MTurk workers first choose an item they already owned (not knowing why) and are then randomized to high and low likelihood of narrative thinking. Finally, participants are offered to sell their items to the experimenter, and their willingness to accept (WTA) is elicited through incentivized multiple price lists (where one decision might be randomly selected to count).
Experimental Design Details
We manipulate the likelihood of narrative thinking by asking participants to describe their self-selected item with either a story (narrative thinking) or a list (analytical thinking). Thus, participants naturally create their own stimuli in the same way they would in real life. Note that at the time the item is chosen, participants are blind to the consequences of their choice (i.e., they don't know they'll be offered to sell it).
Randomization Method
Digital randomization for the treatment arms, and a public lottery for the binding decisions in the MPL.
Randomization Unit
The individual is the randomized unit of treatment and control, and individual-decision touple (e.g., subject 104, decision 32) is the randomized unit for the lottery.
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
1000 individuals
Sample size: planned number of observations
1000 individuals
Sample size (or number of clusters) by treatment arms
250 non-significant / list, 250 non-significant / narrative, 250 significant / list, 250 significant / narrative.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Human Judgment and Decision-Making
IRB Approval Date
2021-02-22
IRB Approval Number
IRBSTUDY2015_00000482
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