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Social interactions, framing, and the disposition effect
Last registered on July 17, 2019

Pre-Trial

Trial Information
General Information
Title
Social interactions, framing, and the disposition effect
RCT ID
AEARCTR-0004304
Initial registration date
June 12, 2019
Last updated
July 17, 2019 3:36 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
Paderborn University
Other Primary Investigator(s)
PI Affiliation
Paderborn University
Additional Trial Information
Status
Completed
Start date
2019-06-04
End date
2019-06-19
Secondary IDs
Abstract
Increasing overlap between social media and financial markets has led to the emergence of new business models in recent years. Several online brokerage services combine the services of online brokerage with features of social networks and allow individuals to manage their portfolios and exchange capital market related information. Typical features enable investors to disclose and discuss their investment decisions with their peers. Recent literature provides convincing evidence that investors' investment strategies are altered by the social interactions and peer comparisons on those platforms (Heimer, 2016; Pelster and Hofmann, 2018; Lukas et al., 2017). However, the exact manner of investors' adaptions to the new setting is still unclear. For example, while some papers argue that social interactions increase the disposition effect, others argue that the disposition effect is decreased in such a scopic regime. We argue that the conflicting results can be explained by the framing of the decision problem on the platforms and test our hypothesis in an experimental setting
External Link(s)
Registration Citation
Citation
Liêu, Minh Lý and Matthias Pelster. 2019. "Social interactions, framing, and the disposition effect." AEA RCT Registry. July 17. https://doi.org/10.1257/rct.4304-3.0.
Former Citation
Liêu, Minh Lý and Matthias Pelster. 2019. "Social interactions, framing, and the disposition effect." AEA RCT Registry. July 17. https://www.socialscienceregistry.org/trials/4304/history/50175.
Sponsors & Partners

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Experimental Details
Interventions
Intervention(s)
This paper analyzes the impact of social interactions and framing on the disposition effect in an experiment based on Weber and Camerer (1998). Participants will be allocated to random groups of three and receive rankings, which display their "success" compared to the other participants in their group. Rankings will be altered between the control and treatment condition.
Intervention Start Date
2019-06-04
Intervention End Date
2019-06-19
Primary Outcomes
Primary Outcomes (end points)
disposition effect
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
This paper analyzes the impact of social interactions and framing on the disposition effect in an experiment based on Weber and Camerer (1998). Participants will be allocated to random groups of three and receive rankings, which display their "success" compared to the other participants in their group. Rankings will be altered between the control and treatment condition.
Experimental Design Details
Randomization Method
Randomization done in office by a computer
Randomization Unit
experimental sessions
Was the treatment clustered?
Yes
Experiment Characteristics
Sample size: planned number of clusters
6
Sample size: planned number of observations
78
Sample size (or number of clusters) by treatment arms
39 individuals control; 39 individuals treatment
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Supporting Documents and Materials

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IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
German Association for Experimental Economic Research e.V.
IRB Approval Date
2019-06-03
IRB Approval Number
Y2LDoKRh
Analysis Plan

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Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
Yes
Intervention Completion Date
June 19, 2019, 12:00 AM +00:00
Is data collection complete?
Yes
Data Collection Completion Date
June 19, 2019, 12:00 AM +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
81 students
Was attrition correlated with treatment status?
No
Final Sample Size: Total Number of Observations
81 students
Final Sample Size (or Number of Clusters) by Treatment Arms
Data Publication
Data Publication
Is public data available?
No

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Program Files
Program Files
No
Reports and Papers
Preliminary Reports
Relevant Papers
Abstract
This paper studies the influence of framing on the relationship between trading in a transparenttrading environment (a "scopic regime") and the disposition effect. In principle, the recent literature agreesthat social interactions alter investors’ disposition effect. However, while some studies argue the dispositioneffect increases in a social environment, others provide evidence that the disposition effect decreases undera scopic regime. We show that the framing of the decision problem on social trading platforms affects thesign on this relationship, and thereby synthesize the existing findings. Individuals alter their behavior tooptimize their social image under the given framing.
Citation