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Recent publications

Connectivity and community structure of online and register-based social networks

M Menyhért, E Bokányi, R Corten, EM Heemskerk, Y Kazmina, FW Takes EPJ Data Science 14 (1), 8, 2025

The dominance of online social media data as a source for large-scale social network studies has recently been challenged by networks constructed from state-curated register data. In this paper focused on the cross-comparison of the network structures, we investigate the similarities and differences of the Dutch online social network (OSN) Hyves and a register-based social...

2025

China's rise as global scientific powerhouse: A trajectory of international collaboration and specialization in high-impact research

N Pisani, HD Boekhout, EM Heemskerk, FW Takes Research Policy 54 (8), 105288, 2025

The recent and rapid ascent of China into today's scientific powerhouse is increasingly debated in circles of economic politics and policy making. Yet, we still know relatively little how such rise has materialized in terms of Chinese scientists' openness to international collaborations and relative focus on high-impact research, particularly in relation to the U.S. Leveraging...

2025

Can social capital remedy structural inequality? Economic mobility in a longitudinal population-scale social network

Y Kazmina, EM Heemskerk, E van der Kooij, E BokĂĄnyi, FW Takes arXiv preprint arXiv:2508.05275, 2025

The promise of equal opportunity is a cornerstone of modern societies, yet upward economic mobility remains out of reach for many. Using a decade of population-scale social network data from the Netherlands, covering over a billion family, school, workplace, and neighborhood ties, we examine how structural inequality and social capital jointly shape economic trajectories. Parental...

2025

Freshness, persistence and success of scientific teams

HD Boekhout, EM Heemskerk, N Pisani, FW Takes arXiv preprint arXiv:2507.12255, 2025

Team science dominates scientific knowledge production, but what makes academic teams successful? Using temporal data on 25.2 million publications and 31.8 million authors, we propose a novel network-driven approach to identify and study the success of persistent teams. Challenging the idea that persistence alone drives success, we find that team freshness - new collaborations built...

2025

From Contact to Threat: A Social Network Perspective on Perceptions of Immigration

Y Kazmina, EM Heemskerk, E Bokányi, FW Takes arXiv preprint arXiv:2407.06820, 2024

Our perceptions are shaped by the social networks we are embedded in. Despite the acknowledged influence of close contacts on how we perceive the world, the role of the broader social environment remains opaque. Here, we leverage a unique combination of population-scale social network and survey data on perceptions of immigration. We find that both...

2024

Socio-economic segregation in a population-scale social network

Y Kazmina, EM Heemskerk, E Bokanyi, FW Takes Social Networks 78, 279-291, 2024

We propose a social network-aware approach to study socio-economic segregation. The key question that we address is whether patterns of segregation are more pronounced in social networks than in the common spatial neighborhood-focused manifestations of segregation. We, therefore, conduct a population-scale social network analysis to study socio-economic segregation at a comprehensive and highly granular social...

2024

Contacts in contexts: Measuring intergroup contact opportunities at the population-scale through linked administrative and survey data

N Soler, E Heemskerk, Y Kazmina OSF, 2024

The notion of “social opportunity structure”(SOS) is central in research on segregation and intergroup relations, but notoriously difficult to measure because it requires capturing potential rather than actual contacts across multiple social contexts at once. We propose a new comprehensive approach to measure the notion of SOS for a whole country. We leverage population-scale social...

2024

The anatomy of a population-scale social network

E Bokányi, EM Heemskerk, FW Takes Scientific Reports 13 (1), 9209, 2023

Large-scale human social network structure is typically inferred from digital trace samples of online social media platforms or mobile communication data. Instead, here we investigate the social network structure of a complete population, where people are connected by high-quality links sourced from administrative registers of family, household, work, school, and next-door neighbors. We examine this...

2023

The new gatekeepers of financial claims: States, passive markets, and the growing power of index providers

J Fichtner, E Heemskerk, J Petry Capital claims: Power and global finance, 107-128, 2022

Since the financial crisis there has been a massive shift from actively managed funds to passive funds that merely replicate financial indexes. Instead of active investors influencing states through their investment decisions, in this new economic reality the locus of agency is shifting from investors towards index providers as they decide which companies and countries...

2022

Proximity at a distance: The relationship between foreign subsidiary co-location and MNC headquarters board interlock formation

F De Beule, S Elia, J Garcia-Bernardo, EM Heemskerk, A Jaklič, ... International Business Review 31 (4), 101971, 2022

Corporations seek various relationships, such as board interlocks, with other firms to reduce resource dependencies. The consistent theoretical expectation and empirical finding that physical proximity is an important driver for board interlock formation is seemingly at odds with the emerging and growing literature on transnational board interlock ties. We argue that the effect of proximity...

2022

Community membership consistency applied to corporate board interlock networks

DE Kuppevelt, R Bakhshi, EM Heemskerk, FW Takes Journal of Computational Social Science 5 (1), 841-860, 2022

Community detection is a well-established method for studying the meso-scale structure of social networks. Applying a community detection algorithm results in a division of a network into communities that is often used to inspect and reason about community membership of specific nodes. This micro-level interpretation step of community structure is a crucial step in typical...

2022

Mandate Ownership: power concentration and second-order agency conflict in the age of passive asset management.

EM Heemskerk, J Veldman, J Fichtner Available at SSRN 4015828, 2022

The rise of passive investing is leading to a new reality of horizontal ownership in combination with a reconcentration of corporate control, notably at the Big Three passive asset managers BlackRock, State Street and Vanguard. We introduce the concept of mandate ownership and point to a process of double decoupling in which the Big Three...

2022

Beaten paths towards the transnational corporate elite

D Valeeva, FW Takes, EM Heemskerk International Sociology 37 (1), 97-123, 2022

The transnationalization of economic activities has fundamentally altered the world. One of the consequences that has intrigued scholars is the formation of a transnational corporate elite. While the literature tends to focus on the topology of the transnational board interlock network, little is known about its driving mechanisms. This article asks the question: what are...

2022

Netwerkanalyse biedt nieuwe inzichten voor clustergericht energiebeleid

G Buiten, C Diks, A Faber, E Heemskerk, C Mattsson, F Takes, P Sloot

Synergievoordelen binnen industriële clusters zijn een belangrijk uitgangspunt in het Nederlandse klimaatbeleid. Tegelijkertijd zijn deze clusters in de praktijk soms moeilijk waarneembaar. Een netwerkanalyse maakt een clustergericht industriebeleid met focus op verduurzaming mogelijk.

2021

Evolution of the World Stage of Global Science from a Scientific City Network Perspective

HD Boekhout, EM Heemskerk, FW Takes International Conference on Complex Networks and Their Applications, 142-154, 2021

This paper investigates the stability and evolution of the world stage of global science at the city level by analyzing changes in co-authorship network centrality rankings over time. Driven by the problem that there exists no consensus in the literature on how the spatial unit “city” should be defined, we first propose a new approach...

2021

Delineating the corporate elite: Inquiring the boundaries and composition of interlocking directorate networks

MJ Huijzer, EM Heemskerk Global networks 21 (4), 791-820, 2021

Corporate elite studies have for long investigated networks of interlocking directorates to test and corroborate key theoretical expectations regarding the cohesive organization of such an elite and their ability and willingness to act on behalf of general business interests. These studies typically collect data on a list of 50, 100, 200 or 500 corporations ranked...

2021

The wealth defence industry: A large-scale study on accountancy firms as profit shifting facilitators

L Ajdacic, EM Heemskerk, J Garcia-Bernardo New Political Economy 26 (4), 690-706, 2021

Corporations increasingly engage in innovative ‘tax planning strategies’ by shifting profits between jurisdictions. In response, states try to curtail such profit shifting activities while at the same time attempting to retain and attract multinational corporations. We aim to open up this dichotomy between states and corporations and argue that a wealth defence industry of professional...

2021

Functional structure in production networks

CES Mattsson, FW Takes, EM Heemskerk, C Diks, G Buiten, A Faber, ... Frontiers in big Data 4, 666712, 2021

Production networks are integral to economic dynamics, yet dis-aggregated network data on inter-firm trade is rarely collected and often proprietary. Here we situate company-level production networks within a wider space of networks that are different in nature, but similar in local connectivity structure. Through this lens, we study a regional and a national network of...

2021

Corporate networks

M Babic, J Fichtner, E Heemskerk The Oxford Handbook of International Political Economy, 2021

In 2012, the New York Times proclaimed the age of “big data”—the harnessing and analysis of large swaths of previously unavailable information about the social world (Lohr 2012). This proclamation was not only limited to the usual suspects running their business model on large amounts of user data. A “new breed of political scientists”(Lohr 2012)...

2021