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Migrant networks and international migration: testing weak ties.

¹Departament de Ciències Polítiques i Socials, Universitat Pompeu Fabra, Barcelona, Spain. maomei.liu@upf.edu

|May 25, 2013

Summary

Migrant social networks, particularly weak ties, significantly influence international migration between Senegal and Europe. Network effects are gendered, with weak ties playing a crucial role in male migration decisions.

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Area of Science:

Sociology
Economics
Geography

Background:

International migration is significantly influenced by social networks.
Prior research has largely overlooked the role of friendship and extended-family ties.
The strength of tie theory requires further empirical testing in migration studies.

Purpose of the Study:

To test the strength of tie theory in the context of international migration.
To decompose migrant networks by sources and resources.
To disentangle network effects from other explanations for migration.

Main Methods:

Utilizing longitudinal data from the Migration between Africa and Europe project.
Employing discrete-time hazard models to analyze first-time migration.
Focusing on migration flows between Senegal and Europe (France, Italy, Spain).

Main Results:

Weak ties are confirmed to be important for first-time migration.
Network influences on migration are gendered.
Contrary to some literature, strong ties are not consistently more important than weak ties for both genders; weak ties are particularly crucial for male migration.
Resources from strong ties may dampen migration, while resources from weak ties can stimulate male migration.
Resource diversity has varied impacts on male and female migration.

Conclusions:

Migrant social networks, especially weak ties, play a significant role in international migration.
Network effects are gender-specific, highlighting the need for nuanced analysis.
The findings challenge existing assumptions about the primacy of strong ties in migration decisions.