@article{TjadenDunsch2021,
  author    = {Tjaden, Jasper Dag and Dunsch, Felipe Alexander},
  title     = {The effect of peer-to-peer risk information on potential migrants},
  series = {World development : the multi-disciplinary international journal devoted to the study and promotion of world development},
  volume    = {145},
  journal   = {World development : the multi-disciplinary international journal devoted to the study and promotion of world development},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0305-750X},
  doi       = {10.1016/j.worlddev.2021.105488},
  pages     = {13},
  year      = {2021},
  abstract  = {In response to mounting evidence on the dangers of irregular migration from Africa to Europe, the number of information campaigns which aim to raise awareness about the potential risks has rapidly increased. Governments, international organizations and civil society organizations implement a variety of campaigns to counter the spread of misinformation accelerated by smuggling and trafficking networks. The evidence on the effects of such information interventions on potential migrants remains limited and largely anecdotal. More generally, the role of risk perceptions in the decision-making process of potential irregular migrants is rarely explicitly tested, despite the fact that the concept of risk pervades conventional migration models, particularly in the field of economics. We address this gap by assessing the effects of a peer-to-peer information intervention on the perceptions, knowledge and intentions of potential migrants in Dakar, Senegal, using a randomized controlled trial design. The results show that - three months after the intervention - peer-to-peer information events increase potential migrants' subjective information levels, raise risk awareness, and reduce intentions to migrate irregularly. We find no substantial effects on factual migration knowledge. We discuss how the effects may be driven by the trust and identification-enhancing nature of peer-to-peer communication. <br /> (c) 2021 Elsevier Ltd. All rights reserved.},
  language  = {en}
}
@article{Tjaden2021,
  author    = {Tjaden, Jasper},
  title     = {Measuring migration 2.0},
  series = {Comparative migration studies : CMS},
  volume    = {9},
  journal   = {Comparative migration studies : CMS},
  number    = {1},
  publisher = {Springer},
  address   = {London},
  issn      = {2214-594X},
  doi       = {10.1186/s40878-021-00273-x},
  pages     = {20},
  year      = {2021},
  abstract  = {The interest in human migration is at its all-time high, yet data to measure migration is notoriously limited. "Big data" or "digital trace data" have emerged as new sources of migration measurement complementing 'traditional' census, administrative and survey data. This paper reviews the strengths and weaknesses of eight novel, digital data sources along five domains: reliability, validity, scope, access and ethics. The review highlights the opportunities for migration scholars but also stresses the ethical and empirical challenges. This review intends to be of service to researchers and policy analysts alike and help them navigate this new and increasingly complex field.},
  language  = {en}
}
@misc{Tjaden2021,
  author    = {Tjaden, Jasper},
  title     = {Measuring migration 2.0},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  number    = {149},
  issn      = {1867-5808},
  doi       = {10.25932/publishup-55387},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-553873},
  pages     = {20},
  year      = {2021},
  abstract  = {The interest in human migration is at its all-time high, yet data to measure migration is notoriously limited. "Big data" or "digital trace data" have emerged as new sources of migration measurement complementing 'traditional' census, administrative and survey data. This paper reviews the strengths and weaknesses of eight novel, digital data sources along five domains: reliability, validity, scope, access and ethics. The review highlights the opportunities for migration scholars but also stresses the ethical and empirical challenges. This review intends to be of service to researchers and policy analysts alike and help them navigate this new and increasingly complex field.},
  language  = {en}
}