Narratives and Valuations

Last registered on September 30, 2023


Trial Information

General Information

Narratives and Valuations
Initial registration date
March 30, 2021

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
March 30, 2021, 8:52 AM EDT

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

Last updated
September 30, 2023, 6:08 PM EDT

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



Primary Investigator

University of Pittsburgh

Other Primary Investigator(s)

PI Affiliation

Additional Trial Information

Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
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

Loewenstein, George and Dor Morag. 2023. "Narratives and Valuations." AEA RCT Registry. September 30.
Experimental Details


Intervention Start Date
Intervention End Date

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?

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)

Institutional Review Boards (IRBs)

IRB Name
Human Judgment and Decision-Making
IRB Approval Date
IRB Approval Number


Post Trial Information

Study Withdrawal

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Is the intervention completed?
Intervention Completion Date
April 29, 2021, 12:00 +00:00
Data Collection Complete
Data Collection Completion Date
April 29, 2021, 12:00 +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
Was attrition correlated with treatment status?
Final Sample Size: Total Number of Observations
Final Sample Size (or Number of Clusters) by Treatment Arms
Data Publication

Data Publication

Is public data available?

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials