Information campaigns and migration perceptions: Evidence from Senegal

Last registered on June 14, 2022


Trial Information

General Information

Information campaigns and migration perceptions: Evidence from Senegal
Initial registration date
January 17, 2022

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 19, 2022, 4:55 PM EST

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

Last updated
June 14, 2022, 10:38 AM EDT

Last updated is the most recent time when changes to the trial's registration were published.



Primary Investigator

HEC Montréal

Other Primary Investigator(s)

Additional Trial Information

In development
Start date
End date
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
The research studies the effect of information campaigns on irregular immigration on the intentions to migrate irregularly among high school students in Dakar. We analyze which actors and information content are effective the most in shaping students' intention to migrate and migration perceptions.
External Link(s)

Registration Citation

Florio, Erminia. 2022. "Information campaigns and migration perceptions: Evidence from Senegal." AEA RCT Registry. June 14.
Experimental Details


We will evaluate the impact of information campaigns on the intention to migrate and on migration perceptions among high-school students from Senegal.
Intervention Start Date
Intervention End Date

Primary Outcomes

Primary Outcomes (end points)
-Expectations about the future
-Willingness-To-Pay for additional information on migration.
Primary Outcomes (explanation)
-Expectations about the future: Intention to migrate (Likelihood to migrate in 5 years; If yes, likelihood to migrate irregularly if impossible to migrate legally; Started planning journey); Challenges of their potential migration experience; Expected wages in Europe and in Senegal; Likelihood to realize future projects in Senegal, abroad, or both.
-Willingness-To-Pay for additional information on migration (behavioral measure).

Secondary Outcomes

Secondary Outcomes (end points)
-Knowledge on the risks and the dangers linked to the irregular migration journey
-Knowledge on the laws and statistics on irregular migration
-Working conditions of migrants in Europe (those arrived illegally)
Secondary Outcomes (explanation)
-Knowledge on the risks and the dangers linked to the irregular migration journey: Mortality rates in attempted crossings (minimum estimates); Likelihood to undertake physical violence in transit countries; Likelihood to being robbed in transit countries.
-Knowledge on the laws and statistics on irregular migration: Document necessary to live outside ECOWAS; Likelihood for irregular migrants to obtain document in Europe; Possibility of repatriation for illegal migrants in Europe.
-Working conditions of migrants in Europe (those arrived illegally): Unemployment rates; Type of work.

Experimental Design

Experimental Design
Three different information treatments.
Experimental Design Details
There will be three treatments:
T1) A practitioner will give a lecture on data and laws related to migration with a particular focus on irregular immigration;
T2) We will offer teachers a mini-course on data and laws related to irregular migration;
T3) We will organize live (virtual) testimonies of three Senegalese migrants who irregularly entered Italy.
Randomization Method
Randomization done in office by a computer
Randomization Unit
Was the treatment clustered?

Experiment Characteristics

Sample size: planned number of clusters
80 classes from 8 different schools.
Sample size: planned number of observations
1,600 high-school students.
Sample size (or number of clusters) by treatment arms
20 classes control, 20 classes teacher training, 20 classes student training, 20 classes virtual meeting.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
Assuming average intention to migrate is 0.26 and sd is 0.44 (we calculated these data from the Senegalese Afrobarometer Round 7, which included questions on the intention to migrate), power of 0.8, a Type-I error of 0.05 and an intra-cluster (class) correlation of 0.011 (as suggested by the exploratory study conducted in 2020 on a sample of 745 Senegalese high-school students), we are able to detect a minimum effect of 0.09 or better.

Institutional Review Boards (IRBs)

IRB Name
Research Ethics Board (REB) of HEC Montréal
IRB Approval Date
IRB Approval Number


Post Trial Information

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Is the intervention completed?
Data Collection Complete
Data Publication

Data Publication

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Program Files

Program Files
Reports, Papers & Other Materials

Relevant Paper(s)

Reports & Other Materials