blind hiring

Last registered on January 23, 2023


Trial Information

General Information

blind hiring
Initial registration date
January 19, 2023

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
January 23, 2023, 6:52 AM EST

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



Primary Investigator

Georgetown University Qatar

Other Primary Investigator(s)

PI Affiliation
PI Affiliation
University of Exeter
PI Affiliation
Universidad de Loyola

Additional Trial Information

In development
Start date
End date
Secondary IDs
Prior work
This trial is based on or builds upon one or more prior RCTs.
This paper proposes a field experiment to study whether a perception of gender discrimination affects requested wages. People interested in an advertised position can apply using an online portal. After the initial application, participants are randomly allocated to one of two treatments. In the baseline treatment, applicants are asked to fill in a standardized curriculum vitae template, containing information about the applicant’s first name, surname, education, and employment. In a gender-blind treatment, applicants complete a curriculum vitae template in which applicants can only report their initials, so that information about gender is not transmitted. In both treatments, applicants are asked to request the hourly wage they wish to receive if hired.
Applicants are randomly assigned to a “hiring committee” that decides who is finally hired. The committee is composed of a predetermined number of people and have to rank a sample of candidates. Depending on the information providing by candidates, the hiring process will be either standard or gender-blind.
External Link(s)

Registration Citation

Charness, Gary et al. 2023. "blind hiring." AEA RCT Registry. January 23.
Experimental Details


Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
The key outcome variables will be:
1. Female ranking of candidates in each treatment
2. Male ranking of candidates in each treatment
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
For this experiment, we partner with, a platform that allows companies to advertise job offers. Following the procedures in Leibbrandt and List (2015), the experiment is divided into three stages.

Stage 1. A job position is posted in the platform. The job consists of cleaning and preparing a database to be used by a group of researchers. During the first stage, all people interested in the job can apply using the portal. During the initial application process, subjects must provide personal information and their qualifications related to the job.

Stage 2. After the first stage is over, applicants are randomly allocated to one of the treatments.
In the Gender-Reveal treatment (GR, hereafter), applicants receive an email in which they are told that they must fill a standardized curriculum vitae template to continue with the process. Applicants provide: i) full name and surname, ii) highest education level achieved, iii) job experience, iv) age, and v) current work status. The last field that people complete is the desired hourly wage. Filling in the template takes on average 10 minutes. People were given a deadline of a month to provide the required information.
The Gender-Blind treatment (GB, hereafter) is the same except applicants are told that they will be hired only based on merits and are asked to provide only their initials. After filling in the required information, candidates are asked for their desired hourly wage.

Stage 3. After the deadline for applications, applicants in the second stage are randomly assigned to a “hiring committee” that decides who is finally hired. The committee is composed of a predetermined number of people (ranging from 6 to 10 members) with the same number of male and female members. Applicants do not know the number of people in the committee. The hiring process is as follows. The members of the committee are presented with an average of 24 applications (12 male candidates and 12 female candidates). The information that the hiring committee receives was provided by the applicants in the second stage of the process. Members of the committee were briefed about the characteristics of the available job, and they were asked to independently rank the first five candidates in the pool. The highest ranked candidate by a member of the committee obtains 5 points, the second highest obtains 4 points, and so on until the fifth ranked candidate, who obtains 1 point. All committee members rank the candidates, and the total number of points are computed for each candidate. The candidate with the most points is the one who is offered the job. If the first candidate does not accept the job, the second ranked candidate is offered the position. This process continues until one candidate accepts the offer. The candidates knew that there is a hiring committee, but they are not aware of these details.
Members of the hiring committee are also informed about their payment scheme. Hiring committee members’ earnings depend on the performance of the candidate who is hired by the committee. All members of the committee earn the same amount (regardless of how they rank the candidates). Each committee member receives a fixed amount of $5, plus a bonus that depends on the performance of the hired candidate and the salary paid to her. In particular, the payoff function is described below:

Payment=$5+$0.01*(#processed data)-(hourly salary requested)
Experimental Design Details
Randomization Method
Randomization done by a computer
Randomization Unit
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
150 individuals that will participate in the hiring committees
Sample size: planned number of observations
180 individuals that will participate in the hiring committees
Sample size (or number of clusters) by treatment arms
45 males and 45 females in each treatment
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)

Institutional Review Boards (IRBs)

IRB Name
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