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An Experiment on Property and Morality
Last registered on May 19, 2020

Pre-Trial

Trial Information
General Information
Title
An Experiment on Property and Morality
RCT ID
AEARCTR-0005325
Initial registration date
January 19, 2020
Last updated
May 19, 2020 7:06 AM EDT
Location(s)
Region
Primary Investigator
Affiliation
University Pompeu Fabra Barcelona
Other Primary Investigator(s)
PI Affiliation
Columbia University
Additional Trial Information
Status
Completed
Start date
2020-01-21
End date
2020-03-15
Secondary IDs
Abstract
The relationship between law and culture has long been the focus of scholarly attention by academic lawyers, economists and political scientists (see e Dari-Mattiacci and Guerriero, 2015, for a review and recent reassessment). Among prevalent cultural values, moral commitments take center stage and have been recently shown to vary greatly across regions (Awad et al.,2018). An emerging literature is starting to analyze the empirical foundations and implications of moral concerns (Sommers, 2020). While it is intuitive that there must be a connection between a society's prevalent set of moral norms and its laws, most previous studies only address part of the problem and, namely, how culture and morality affect the law. So far there is no rigorous empirical study as to how the law affects a society's moral attitudes. We aim at making a first step towards understanding how property rights---a crucially important set of legal rules---affect morality. We study how changing property rights affects individuals' survey responses to traditional moral dilemmas---such as killing more or fewer people, killing a man or a woman, killing the young or the old, and the like---which is turn can be matched to broader moral stands, such us the attitude towards gender, age, wealth, and social status.
External Link(s)
Registration Citation
Citation
Dari-Mattiacci, Giuseppe and Marco Fabbri. 2020. "An Experiment on Property and Morality." AEA RCT Registry. May 19. https://doi.org/10.1257/rct.5325-1.1.
Experimental Details
Interventions
Intervention(s)
See attached pre-analysis plan.
Intervention Start Date
2020-01-21
Intervention End Date
2020-03-15
Primary Outcomes
Primary Outcomes (end points)
Nine binary moral choices made by participants.
Primary Outcomes (explanation)
See attached pre-analysis plan.
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
We implement nine choices of the classical trolley dilemma as specified in the Moral Machine Experiment (Awad et al., 2018). We combine this design with the process of implementation of a reform of property rights over land in order to have treatment and control groups.
Experimental Design Details
Randomization Method
In office by computer.
Randomization Unit
Village
Was the treatment clustered?
Yes
Experiment Characteristics
Sample size: planned number of clusters
32
Sample size: planned number of observations
576
Sample size (or number of clusters) by treatment arms
288
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Ethics Commitee - Parc de Salut MAR
IRB Approval Date
2018-04-11
IRB Approval Number
2018/8015/I
Analysis Plan

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Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
Yes
Intervention Completion Date
March 15, 2020, 12:00 AM +00:00
Is data collection complete?
Yes
Data Collection Completion Date
March 15, 2020, 12:00 AM +00:00
Final Sample Size: Number of Clusters (Unit of Randomization)
32
Was attrition correlated with treatment status?
No
Final Sample Size: Total Number of Observations
576
Final Sample Size (or Number of Clusters) by Treatment Arms
288
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports, Papers & Other Materials
Relevant Paper(s)
REPORTS & OTHER MATERIALS