Research output per year

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Personal profile


Dr Nicholas Harrigan is Senior Lecturer in Quantitative Sociology at Macquarie University, Sydney, Australia.

His major areas of research include social networks, particularly networks of conflict; low wage migrant workers in Australia and Asia; and participatory approaches to social research.

Before joining Macquarie University, he was Assistant Professor of Sociology at Singapore Management University (2008-2017), postdoctoral researcher in Sociology at Nuffield College at the University of Oxford, and completed a PhD in Politics at the Australian National University. 

His work has been published in leading journals such the British Journal of Sociology (twice) and Social Networks (three times).

Information for prospective graduate students

I have three main areas of research in which I am interested in supervising graduate students.

Area 1. Social Networks, particularly negative ties and signed networks.

Social network analysis is an important technique across a wide range of disciplines, including sociology, economic, medicine, and physics.

I am interested in studying social networks with both qualitative and quantitative techniques, with a focus on solving fundamental basic research questions, such as: how to conceptualise, categorise, and operationalise network ties; and what are the major causes and consequences of tie formation.

I have a major research agenda, publications, and collaborations around the topic of negative ties (i.e. ties of conflict, avoidance, dislike, and harm) and signed graphs (networks of both positive and negative ties), and have a considerable number of potential masters and PhD projects ready for implementation by keen graduate students. Please enquire for further details. 

Area 2. Understanding, explaining, and providing a voice for temporary migrant workers and international students. 

Temporary migrant workers are an important and growing group of migrants across the world, including Australia. While they face issues that parallel those of precarious workers everywhere, they also face unique social, economic, and legal problems that are indicative of profound levels of disadvantage and exploitation.

Academically there are a considerable number of important research questions to be answered:

  • What are the major issues that these workers face? How do these issues vary across countries, visa categories, and industries? Can this variation inform policy strategies to alleviate the problems faced by migrant workers?

  • What are the key issues for these workers? How can academics help these workers voice their concerns and issues to wider society and policy makers?

  • Theoretically, what frameworks, theories, and conceptual categories best capture the key features of the experiences and conditions of temporary migrant workers in the current period? Many different frameworks have been, or could be, used, including neoliberalism, precarity, super-exploitation, forced labour, human trafficking, rationalisation, and classical marxism. Which theories from within these or other frameworks are most useful for explaining temporary migrant workers today?

  • How should advocates for better conditions for temporary migrant workers respond to the recent academic work of Martin Ruhs (www.priceofrights.com/which argues that advocating for rights for temporary migrant workers leads to them not getting access to work in developed economies?

Area 3. Participatory, large-scale research for social change.

The vast majority of research - academic and professional - is done by professionals with decades of training, often substantial funding, and all the strengths and weaknesses that flow from this. 

I am interested in exploring methods for methods for engaging in large-scale, participatory, and public social science. 

I have engaged in projects involving over 100 volunteers, and also supervised more than 1000 students through original research projects involving primary source data collection analysis and write up, as part of teaching research methods. 

I am interested in working with students who are interested in developing and piloting methods for involving volunteers and non-professionals in research from conceptualisation to disemination (and also the steps in between - design, data collection, analysis, writing).

I am also interested in work with students who would like to attempt to implement participatory research methods which empower marginalised communities, such as the Cultural Centred Communication approach of Professor Mohan Dutta. 



Network Recent external collaboration on country level. Dive into details by clicking on the dots.


Research Outputs

Negative ties and signed graphs research: stimulating research on dissociative forces in social networks

Harrigan, N. M., Labianca, G. J. & Agneessens, F., Jan 2020, In : Social Networks. 60, p. 1-10 10 p.

Research output: Contribution to journalArticle

  • Avoidance in negative ties: Inhibiting closure, reciprocity, and homophily

    Harrigan, N. & Yap, J., 1 Jan 2017, In : Social Networks. 48, p. 126-141 16 p.

    Research output: Contribution to journalArticle

  • 10 Citations (Scopus)

    Influentials, novelty, and social contagion: the viral power of average friends, close communities, and old news

    Harrigan, N., Achananuparp, P. & Lim, E-P., Oct 2012, In : Social Networks. 34, 4, p. 470-480 11 p.

    Research output: Contribution to journalArticle

  • 33 Citations (Scopus)

    Why does everybody hate me? Balance, status, and homophily : the triumvirate of signed tie formation

    Yap, J. & Harrigan, N., 1 Jan 2015, In : Social Networks. 40, p. 103-122 20 p.

    Research output: Contribution to journalArticle

  • 28 Citations (Scopus)

    Threat of deportation as proximal social determinant of mental health amongst migrant workers

    Harrigan, N. M., Koh, C. Y. & Amirrudin, A., 1 Jun 2017, In : Journal of Immigrant and Minority Health. 19, 3, p. 511-522 12 p.

    Research output: Contribution to journalArticle

  • 8 Citations (Scopus)


    • 5 Invited talk
    • 1 Editorial work