Migration studies have developed rapidly as a research field over the past decades. This article provides an empirical analysis not only on the development in volume and the internationalization of the field, but also on the development in terms of topical focus within migration studies over the past three decades. To capture volume, internationalisation, and topic focus, our analysis involves a computer-based topic modelling of the landscape of migration studies. Rather than a linear growth path towards an increasingly diversified and fragmented field, as suggested in the literature, this reveals a more complex path of coming of age of migration studies. Although there seems to be even an accelerated growth for migration studies in terms of volume, its internationalisation proceeds only slowly. Furthermore, our analysis shows that rather than a growth of diversification of topics within migration topic, we see a shift between various topics within the field. Finally, our study shows that there is no consistent trend to more fragmentation in the field; in contrast, it reveals a recent recovery of connectedness between the topics in the field, suggesting an institutionalisation or even theoretical and conceptual coming of age of migration studies.
It is clear that the field of migration studies has grown significantly over the past decades. What is less known is how this growth has taken place. This article combines bibliometric metadata with expert interviews to analyse the institutionalisation of the field in terms of self-referentiality, internationalisation, and epistemic communities. Self-referentiality in migration studies has gradually increased as the field has grown, until recently. The field has internationalised in terms of international co-authorships but has done so unevenly. Finally, we find that epistemic communities in migration studies, based largely on disciplines, increasingly refer to one another and are increasingly interdisciplinary.
Migration studies has contributed significantly to our understanding of mobilities and migration-related diversities. It has developed a distinct body of knowledge on why people migrate, how migration takes place, and what the consequences are of migration in a broad sense, both for migrants themselves and for societies involved in migration. As a broadly-based research field, migration studies has evolved at the crossroads of a variety of disciplines. This includes disciplines such as sociology, political science, anthropology, geography, law and economics, but increasingly it expands to a broader pool of disciplines also including health studies, development studies, governance studies and many more, building on insights from these disciplines.
IMISCOE, it is argued, has played a key role in institutionalising migration studies. This commentary explores the bibliometric data from the opening article of this series to examine this claim more deeply, and finds indications of an ‘IMISCOE effect’. The network is increasingly prominent in the field; it has established a ‘citation community’ among its members; it has been a key part of the internationalisation of the field. Its influence is unlikely to decline, which is also a point of caution, namely, that the ‘IMISCOE effect’ does not belie the diversity of perspectives in migration research that exist within and beyond the network.
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