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Forschungsprojekte (laufend)


Vaccine hestinancy among migrant communities in Germany

Using online experiments via Facebook and interviews with migrants, this project explores the barriers to higher vaccine uptake among migrant communities in Germany. 

Team: Jasper Tjaden, Esther Haarmann (IOM), Rowan Hanno


Measuring migration behaviour through WhatsApp use

This project investigates the potential of WhatsApp for follow-up phone surveys in low-income settings to measure migration. In this methodological study, the team compares response rates across various survey modes.

Team: Jasper Tjaden; Felix Ndashimye (IOM)


​​​​​​​Algorithmic allocation of refugees in Germany

In Germany, asylum seekers are distributed across the German regions randomly taken into account population size and tax revenue (Königsteiner Schlüssel). Research for the US and Switzerland has found that algorithmic allocation of asylum seekers that takes into account the situation of refugees (gender, education, family status et.c) can improve employment chances. In this project, we are exploring whether an algorithmic allocation of refugees is feasible in Germany (based on various data sources) and what the potenial gains could be. 

Team: Jasper Tjaden, Agnes Cseh (Hasso-Plattner-Institut); Abdullatif  Ghajar (Hasso-Plattner-Institut); Stefanie Knoll (Ifo Institut Dresden)


Re-migration preferences

In collaboration with the International Organization for Migration, this study conducts a Discrete Choice Experiment with migrant that have returned to countries in East Africa. The experiment elicits migrants’ preferences towards re-migrating abroad.

Team: Jasper Tjaden; Ulf Liebe (University of Warwick); Davide Bruscoli (IOM) 


Refugee integration policy in Germany

This project explores the effects of various refugee integration polices including integration courses and language acquisition; residential mobility restrictions;  and legal status assignment. The work has a particular interest in the role of regions, districts and municipalities as well as policy changes introduced since 2015. 

Team: Jasper Tjaden; Samir Khalil


Was there a Merkel-Effect on migration? 

In 2015, German Chancellor Angela Merkel decided to allow over a million asylum seekers to cross the border into Germany. One key concern at the time was that her decision would signal an open-door policy to aspiring migrants worldwide – thus, increasing migration to Germany in the long-term. With the continued global rise in forced displacement, Merkel’s decision in 2015 provides a unique case study for the fundamental question of whether welcoming migration policies have sustained effects on migration towards destination countries. We analyze an extensive range of data on migration inflows, intentions, and interest between 2000 and 2020. 

Team: Jasper Tjaden; Tobias Heidland (ifW Kiel)


The role of information in the decision-making process of potential irregular migrants

The project in collaboration with the International Organization for Migration, funded by the Government of the Netherlands investigates the role of various drivers of irregular migration, including information on costs, earnings, and risks, among potential migrants in West Africa and Ethiopia. The project involves large scale primary data collection and experimental and quasi-experimental designs.

Team: Jasper Tjaden; Oumarou Hebie (IOM); Felix Ndashimye (IOM)


Gender disparities in the recognition of academic titles in Germany

The project examines whether female academics are less likely to be addressed with their formal titles compared to their male peers.

Team: Lena Hipp (WZB); Jasper Tjaden