Lying: An experiment over 9 countries

Last registered on February 03, 2021


Trial Information

General Information

Lying: An experiment over 9 countries
Initial registration date
February 02, 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
February 03, 2021, 10:03 AM EST

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



Primary Investigator

National University of Singapore

Other Primary Investigator(s)

Additional Trial Information

In development
Start date
End date
Secondary IDs
We conduct a dice roll experiment over nine countries, with representative sample of 32,400 subjects. The experiment uses the online panel provided by the SurveyMonkey. Our main focus is three folds. First, we provide large scale evidence of lying behavior in the standard dice roll experiment. Second, we test whether lying behavior is affected if the outcome is determined by luck. Third, the self-selection into different lying environments is also investigated.
External Link(s)

Registration Citation

Kim, Jeongbin. 2021. "Lying: An experiment over 9 countries." AEA RCT Registry. February 03.
Experimental Details


Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
The number subjects report after rolling a (virtual) 6-sided dice.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Our experiment has three variations of the dice roll experiment: (1) standard dice roll experiment, (2) dice roll experiment with the reward being determined by a lottery, and (3) dice roll experiment with a chance that subjects self-select into different environments. We plan to conduct three treatments in 9 countries. In each country, each treatment will have 1,200 subjects. In total, we will have 32,400 subjects.
Experimental Design Details
The three treatments are as follows. In the standard dice roll, subjects are asked to roll a (virtual) 6-sided dice. The result of dice roll will never be monitored and this is clearly known to subjects. The number subjects report after a dice roll will determine their monetary rewards. In the second treatment, the final outcome is determined by a lottery. The number subjects report decides the probability of winning. That is, the higher the number reported, the higher is the winning probability. In the third treatment, before subjects roll a dice, they are asked to choose one option: (1) one in which the result of a dice roll will never be monitored by researchers, and (2) one in which the result of a dice roll can be monitored by researchers.
Randomization Method
The computer program by the SurveyMonkey will randomly assign subjects into one of three treatments.
Randomization Unit
The randomization unit is countries. In each country, we apply random assignment of subjects into three treatments.
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
9 countries
Sample size: planned number of observations
32,400 subjects.
Sample size (or number of clusters) by treatment arms
In each country, we will have 1,200 subjects for each treatment. At the treatment level, each treatment will have 10,800 subjects over 9 countries.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
1,200 in each treatment for each country is far more than what is needed the effect size for main outcomes.

Institutional Review Boards (IRBs)

IRB Name
Novelty, Conformity and Trust in Vaccines
IRB Approval Date
IRB Approval Number


Post Trial Information

Study Withdrawal

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Is the intervention completed?
Data Collection Complete
Data Publication

Data Publication

Is public data available?

Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials