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Does the facial image matter? An experiment on the willingness to disclose private information.
Last registered on June 03, 2021

Pre-Trial

Trial Information
General Information
Title
Does the facial image matter? An experiment on the willingness to disclose private information.
RCT ID
AEARCTR-0007447
Initial registration date
April 05, 2021
Last updated
June 03, 2021 1:23 AM EDT
Location(s)

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Primary Investigator
Affiliation
Peking University
Other Primary Investigator(s)
PI Affiliation
Peking University
PI Affiliation
Peking University
Additional Trial Information
Status
On going
Start date
2021-04-07
End date
2021-12-07
Secondary IDs
Abstract
In the age of information technology and big data, how people evaluate their personal data is a basic and important issue that has not been fully explored. Firstly, we want to find out whether people’s willingness to disclose privacy information with or without facial image are significantly different. So, we will measure the willingness to accept (WTA) the uploading of a screenshot of their current "Epidemic Prevention Itinerary Card" or "Personal Health Code" (both of them contain private information) , whose main difference is whether include a facial image. Then, we will test the “privacy paradox” by comparing the participants’ WTAs in a hypothetical environment with those in a real-incentive environment.
External Link(s)
Registration Citation
Citation
Gao, Yu, Juanjuan Meng and Yu Wang. 2021. " Does the facial image matter? An experiment on the willingness to disclose private information. ." AEA RCT Registry. June 03. https://doi.org/10.1257/rct.7447-3.0.
Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2021-04-07
Intervention End Date
2021-12-07
Primary Outcomes
Primary Outcomes (end points)
the willingness to accept the uploading of a current screenshot of her/his "Epidemic Prevention Itinerary Card" or "Personal Health Code"
Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
Experiment 1:

There are two different types of private information in this experiment. One is the "Epidemic Prevention Itinerary Card", which contains the risk level determined by the individual's itinerary, health status and the cities visited within 14 days. The other is the "Personal Health Code". Unlike the "Epidemic Prevention Itinerary Card", it includes the risk level determined by the personal itinerary ,health status and a facial image of the individual. The main difference between a screenshot of “Epidemic Prevention Itinerary Card” and “Personal Health Code” is the latter includes a photo of the participant’s face. A participant will be asked whether be willing to upload one specific kind of private information ("Epidemic Prevention Itinerary Card" or "Personal Health Code") under one specific bid.

All the participants will be randomly divided into 2 treatment groups and be asked if they are willing to upload a screenshot of their current "Epidemic Prevention Itinerary Card"(Treatment Group 1) or "Personal Health Code"(Treatment Group 2) to obtain a specific amount of additional payment. As for the “specific amount of additional payment”, we will offer 3 bids(1, 10, 30) . The participants in each treatment will be randomly split into 3 fractions with equal number of people. So there are 6 treatment groups in total.

In this experiment, the time on the screenshots is used to verify whether it is the real photo captured at the moment. It can effectively solve a problem in several previous experiments about privacy that it is hard to effectively verify the authenticity of private information provided by participants.
Experimental Design Details
Not available
Randomization Method
Randomization will be done by the survey platform.
Randomization Unit
individual
Was the treatment clustered?
No
Experiment Characteristics
Sample size: planned number of clusters
300 individuals
Sample size: planned number of observations
300 individuals
Sample size (or number of clusters) by treatment arms
For experiment 1: 50*6
50 individuals for each treatment.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
Guanghua School of Management, Peking University IRB
IRB Approval Date
2021-01-22
IRB Approval Number
#2021-06